Marine protected areas (MPA) are

protected area Protected areas or conservation areas are locations which receive protection because of their recognized natural, ecological or cultural values. There are several kinds of protected areas, which vary by level of protection depending on the ena ...

s of

sea The sea, connected as the world ocean or simply the ocean, is the body of salty water that covers approximately 71% of the Earth's surface. The word sea is also used to denote second-order sections of the sea, such as the Mediterranean Sea, ...

ocean The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the wo ...

estuaries An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environmen ...

or in the US, the

Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes ...

. These marine areas can come in many forms ranging from wildlife refuges to research facilities. MPAs restrict human activity for a conservation purpose, typically to protect natural or cultural resources. Such marine resources are protected by local, state, territorial, native, regional, national, or international authorities and differ substantially among and between nations. This variation includes different limitations on development, fishing practices, fishing seasons and catch limits, moorings and bans on removing or disrupting

marine life Marine life, sea life, or ocean life is the plants, animals and other organisms that live in the salt water of seas or oceans, or the brackish water of coastal estuaries. At a fundamental level, marine life affects the nature of the planet. M ...

. In some situations (such as with the

Phoenix Islands Protected Area The Phoenix Islands Protected Area (PIPA) is located in the Republic of Kiribati, an ocean nation in the central Pacific approximately midway between Australia and Hawaii. PIPA constitutes 11.34% of Kiribati's exclusive economic zone (EEZ), an ...

), MPAs also provide revenue for countries, potentially equal to the income that they would have if they were to grant companies permissions to fish. The value of MPA to mobile species is unknown. There are a number of global examples of large marine conservation areas. The Papahānaumokuākea Marine National Monument, is situated in the central Pacific Ocean, around

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

, occupying an area of 1.5 million square kilometers. The area is rich in wild life, including the green turtle and the Hawaiian monkfish, alongside 7,000 other species, and 14 million seabirds. In 2017 the

Cook Islands ) , image_map = Cook Islands on the globe (small islands magnified) (Polynesia centered).svg , capital = Avarua , coordinates = , largest_city = Avarua , official_languages = , lan ...

passed the Marae Moana Act designating the whole of the country's marine exclusive economic zone, which has an area of 1.9 million square kilometers as a zone with the purpose of protecting and conserving the "ecological, biodiversity and heritage values of the Cook Islands marine environment". Other large marine conservation areas include those around Antarctica, New Caledonia, Greenland, Alaska, Ascension island, and Brazil. As areas of protected

marine biodiversity Marine life, sea life, or ocean life is the plants, animals and other organisms that live in the salt water of seas or oceans, or the brackish water of coastal estuaries. At a fundamental level, marine life affects the nature of the planet. M ...

expand, there has been an increase in ocean science funding, essential for preserving marine resources. In 2020, only around 7.5 to 8% of the global ocean area falls under a conservation designation. This area is equivalent to 27 million square kilometres, equivalent to the land areas of Russia and Canada combined, although some argue that the effective conservation zones (ones with the strictest regulations) occupy only 5% of the ocean area (about equivalent to the land area of Russia alone).

Marine conservation Marine conservation, also known as ocean conservation, is the protection and preservation of ecosystems in oceans and seas through planned management in order to prevent the over-exploitation of these marine resources. Marine conservation is i ...

zones, as with their terrestrial equivalents, vary in terms of rules and regulations. Few zones rule out completely any sort of human activity within their area, as activities such as fishing, tourism, and transport of essential goods and services by ship, are part of the fabric of nation states.

Terminology

The

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

(IUCN) defines a

as:

A clearly defined geographical space, recognised, dedicated and managed, through legal or other effective means, to achieve the long-term conservation of nature with associated
ecosystem services Ecosystem services are the many and varied benefits to humans provided by the natural environment and healthy ecosystems. Such ecosystems include, for example, agroecosystems, forest ecosystem, grassland ecosystems, and aquatic ecosystems. Th ...
and cultural values.

This definition is intended to make it more difficult to claim MPA status for regions where exploitation of marine resources occurs. If there is no defined long-term goal for conservation and ecological recovery and extraction of marine resources occurs, a region is not a marine protected area. "Marine protected area (MPA)" is a term for protected areas that include

marine environment Marine habitats are habitats that support marine life. Marine life depends in some way on the saltwater that is in the sea (the term ''marine'' comes from the Latin ''mare'', meaning sea or ocean). A habitat is an ecological or environmental ...

and

biodiversity Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') l ...

. Other definitions by the IUCN include (2010):

Any area of the intertidal or subtidal terrain, together with its overlying water and associated flora, fauna, historical and cultural features, which has been reserved by law or other effective means to protect part or all of the enclosed environment.

United States Executive Order 13158 in May 2000 established MPAs, defining them as:

Any area of the marine environment that has been reserved by federal, state, tribal, territorial, or local laws or regulations to provide lasting protection for part or all of the natural and cultural resources therein.

The

Convention on Biological Diversity The Convention on Biological Diversity (CBD), known informally as the Biodiversity Convention, is a multilateral treaty. The Convention has three main goals: the conservation of biological diversity (or biodiversity); the sustainable use of its ...

defined the broader term of ''marine and coastal protected area'' (MCPA):

Any defined area within or adjacent to the marine environment, together with its overlying water and associated flora, fauna, historical and cultural features, which has been reserved by legislation or other effective means, including custom, with the effect that its marine and/or coastal biodiversity enjoys a higher level of protection than its surroundings.

An apparently unique extension of the meaning is used by

NOAA The National Oceanic and Atmospheric Administration (abbreviated as NOAA ) is an United States scientific and regulatory agency within the United States Department of Commerce that forecasts weather, monitors oceanic and atmospheric conditio ...

to refer to protected areas on the Great Lakes of North America.

History

The form of marine protected areas trace the origins to the

World Congress on National Parks In its most general sense, the term "world" refers to the totality of entities, to the whole of reality or to everything that is. The nature of the world has been conceptualized differently in different fields. Some conceptions see the worl ...

in 1962. In 1976, a process was delivered to the excessive rights to every

sovereign state A sovereign state or sovereign country, is a polity, political entity represented by one central government that has supreme legitimate authority over territory. International law defines sovereign states as having a permanent population, defin ...

to establish marine protected areas at over 200 nautical miles. Over the next two decades, a scientific body of evidence marked the utility in the designation of marine protected areas. In the aftermath of the

1992 Earth Summit The United Nations Conference on Environment and Development (UNCED), also known as the Rio Conference or the Earth Summit (Portuguese: ECO92), was a major United Nations conference held in Rio de Janeiro from June 3 to June 14, 1992. Earth S ...

Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...

, an international target was established with the encompassment of ten percent of the world's marine protected areas. On 28 October 2016 in

Hobart Hobart ( ; Nuennonne/Palawa kani: ''nipaluna'') is the capital and most populous city of the Australian island state of Tasmania. Home to almost half of all Tasmanians, it is the least-populated Australian state capital city, and second-small ...

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

, the

Convention for the Conservation of Antarctic Marine Living Resources The Convention on the Conservation of Antarctic Marine Living Resources, also known as the Commission for the Conservation of Antarctic Marine Living Resources, and CCAMLR, is part of the Antarctic Treaty System. The convention was opened for s ...

agreed to establish the first

Antarctic The Antarctic ( or , American English also or ; commonly ) is a polar region around Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises the continent of Antarctica, the Kerguelen Plateau and other ...

and largest marine protected area in the world encompassing 1.55 million km² (600,000 sq mi) in the

Ross Sea The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on Earth. It derives its name from the British explorer James Clark Ross who ...

. Other large MPAs are in the

Indian Indian or Indians may refer to: Peoples South Asia * Indian people, people of Indian nationality, or people who have an Indian ancestor ** Non-resident Indian, a citizen of India who has temporarily emigrated to another country * South Asia ...

Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

, and

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

s, in certain exclusive economic zones of Australia and overseas territories of

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

, the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

and the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

, with major ( or larger) new or expanded MPAs by these nations since 2012—such as

Natural Park of the Coral Sea The Natural Park of the Coral Sea (french: Le Parc Naturel de la Mer de Corail), founded in 2014, is a marine park located in New Caledonia, a special collectivity of France. As of 2017 it is the fourth largest protected area in the world, en ...

Pacific Remote Islands Marine National Monument The Pacific Remote Islands Marine National Monument is a group of unorganized, mostly unincorporated United States Pacific Island territories managed by the United States Fish and Wildlife Service of the United States Department of the Int ...

, Coral Sea Commonwealth Marine Reserve and South Georgia and the South Sandwich Islands Marine Protected Area. When counted with MPAs of all sizes from many other countries, as of August 2016 there are more than 13,650 MPAs, encompassing 2.07% of the world's oceans, with half of that area – encompassing 1.03% of the world's oceans – receiving complete " no-take" designation.

Classifications

Several types of compliant MPA can be distinguished: *A totally marine area with no significant terrestrial parts. *An area containing both marine and terrestrial components, which can vary between two extremes; those that are predominantly maritime with little land (for example, an

atoll An atoll () is a ring-shaped island, including a coral rim that encircles a lagoon partially or completely. There may be coral islands or cays on the rim. Atolls are located in warm tropical or subtropical oceans and seas where corals can gr ...

would have a tiny island with a significant maritime population surrounding it), or that is mostly terrestrial. *Marine ecosystems that contain land and

intertidal The intertidal zone, also known as the foreshore, is the area above water level at low tide and underwater at high tide (in other words, the area within the tidal range). This area can include several types of habitats with various species ...

components only. For example, a

mangrove forest Mangrove forests, also called mangrove swamps, mangrove thickets or mangals, are productive wetlands that occur in coastal intertidal zones. Mangrove forests grow mainly at tropical and subtropical latitudes because mangroves cannot withstand fr ...

would contain no open sea or ocean marine environment, but its river-like marine ecosystem nevertheless complies with the definition. IUCN offered seven categories of protected area, based on management objectives and four broad governance types. Related

categories include the following; *

World Heritage Site A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for h ...

(WHS) – an area exhibiting extensive natural or cultural history. Maritime areas are poorly represented, however, with only 46 out of over 800 sites. *

Man and the Biosphere Man and the Biosphere Programme (MAB) is an intergovernmental scientific program, launched in 1971 by UNESCO, that aims to establish a scientific basis for the improvement of relationships between people and their environments. MAB's work engag ...

–

UNESCO The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. It ...

program that promotes "a balanced relationship between humans and the

biosphere The biosphere (from Greek βίος ''bíos'' "life" and σφαῖρα ''sphaira'' "sphere"), also known as the ecosphere (from Greek οἶκος ''oîkos'' "environment" and σφαῖρα), is the worldwide sum of all ecosystems. It can also be ...

". Under article 4, biosphere reserves must "encompass a mosaic of ecological systems", and thus combine terrestrial, coastal, or marine ecosystems. In structure they are similar to Multiple-use MPAs, with a core area ringed by different degrees of protection. *

Ramsar site A Ramsar site is a wetland site designated to be of international importance under the Ramsar Convention,8 ha (O) *** Permanent 8 ha (P) *** Seasonal Intermittent < 8 ha(Ts) **

certain criteria for the definition of "Wetland" to become part of a global system. These sites do not necessarily receive protection, but are indexed by importance for later recommendation to an agency that could designate it a protected area. While "area" refers to a single contiguous location, terms such as "''network''", "''system''", and "''region''" that group MPAs are not always consistently employed."''System''" is more often used to refer to an individual MPA, whereas "''region''" is defined by the

World Conservation Monitoring Centre The UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC) is a collaboration centre of UN Environment Programme, based in Cambridge in the United Kingdom. UNEP-WCMC has been part of UN Environment Programme since 2000, and has ...

as:

A collection of individual MPAs operating cooperatively, at various spatial scales and with a range of protection levels that are designed to meet objectives that a single reserve cannot achieve.

At the 2004

, the agency agreed to use "''network''" on a global level, while adopting ''system'' for national and regional levels. The ''network'' is a mechanism to establish regional and local systems, but carries no authority or mandate, leaving all activity within the "''system''". Teal Waves

''No take zones'' (NTZs), are areas designated in a number of the world's MPAs, where all forms of exploitation are prohibited and severely limits human activities. These no take zones can cover an entire MPA, or specific portions. For example, the Papahānaumokuākea Marine National Monument, the world's largest MPA (and largest protected area of any type, land or sea), is a 100% no take zone. Related terms include; ''specially protected area'' (SPA), ''

Special Area of Conservation A Special Area of Conservation (SAC) is defined in the European Union's Habitats Directive (92/43/EEC), also known as the ''Directive on the Conservation of Natural Habitats and of Wild Fauna and Flora''. They are to protect the 220 habitats and a ...

'' (SAC), the United Kingdom's ''marine conservation zones'' (MCZs), or ''area of special conservation'' (ASC) etc. which each provide specific restrictions.

Stressors

Stressors that affect oceans include the impact of

extractive industries Extractivism is the process of extracting natural resources from the Earth to sell on the world market. It exists in an economy that depends primarily on the extraction or removal of natural resources that are considered valuable for exportation w ...

marine pollution Marine pollution occurs when substances used or spread by humans, such as industrial waste, industrial, agricultural pollution, agricultural and municipal solid waste, residential waste, particle (ecology), particles, noise, excess carbon dioxid ...

, and changes to the ocean's chemistry (

ocean acidification Ocean acidification is the reduction in the pH value of the Earth’s ocean. Between 1751 and 2021, the average pH value of the ocean surface has decreased from approximately 8.25 to 8.14. The root cause of ocean acidification is carbon dioxid ...

) resulting from elevated

carbon dioxide Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...

levels, due to our

greenhouse gas emissions Greenhouse gas emissions from human activities strengthen the greenhouse effect, contributing to climate change. Most is carbon dioxide from burning fossil fuels: coal, oil, and natural gas. The largest emitters include coal in China and lar ...

(see also

effects of climate change on oceans Among the effects of climate change on oceans are: an increase in sea surface temperature as well as ocean temperatures at greater depths, more frequent marine heatwaves, a reduction in pH value, a rise in sea level from ocean warming and ice ...

). MPAs have been cited as the ocean's single greatest hope for increasing the resilience of the marine environment to such stressors.Laffoley, D. d'A., (ed.) 2008. Towards Networks of Marine Protected Areas. The MPA Plan of Action for IUCN's World Commission on Protected Areas. IUCN WCPA, Gland, Switzerland. 28 pp. Well-designed and managed MPAs developed with input and support from interested stakeholders can conserve biodiversity and protect and restore

fisheries Fishery can mean either the enterprise of raising or harvesting fish and other aquatic life; or more commonly, the site where such enterprise takes place ( a.k.a. fishing ground). Commercial fisheries include wild fisheries and fish farms, both ...

Economics

MPAs can help sustain local economies by supporting fisheries and tourism. For example,

Apo Island Apo Island is a volcanic island covering 74 hectares in land area, 7 kilometers off the southeastern tip of Negros Island and 30 kilometers south of the Negros Oriental capital of Dumaguete in the Philippines. The name "Apo" means "elder" or "re ...

in the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

made protected one quarter of their reef, allowing fish to recover, jumpstarting their economy. This was shown in the film, ''Resources at Risk: Philippine Coral Reef''. A 2016 report by the

Center for Development and Strategy The Center for Development and Strategy (CDS) is an environmental and economic American think tank and online publisher based in Buffalo, New York, in the United States. The center develops policy studies, risk briefs, and OpEds on political, econ ...

found that programs like the United States National Marine Sanctuary system can develop considerable economic benefits for communities through

Public–private partnership A public–private partnership (PPP, 3P, or P3) is a long-term arrangement between a government and private sector institutions.Hodge, G. A and Greve, C. (2007), Public–Private Partnerships: An International Performance Review, Public Administ ...

s. They can be self-financed through a surrounding "conservation finance area" in which a limited number licenses are granted to benefit from the spillover of the marine protected area.

Management

Typical MPAs restrict

fishing Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from the natural environment, but may also be caught from stocked bodies of water such as ponds, canals, park wetlands and reservoirs. Fishing techniques inclu ...

oil An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) & lipophilic (mixes with other oils). Oils are usually flammable and surface active. Most oils are unsaturated ...

and

gas Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or ...

mining and/or

tourism Tourism is travel for pleasure or business; also the theory and practice of touring (disambiguation), touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tour (disambiguation), tours. Th ...

. Other restrictions may limit the use of

ultrasonic Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it. This limit varies fr ...

devices like

sonar Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigation, navigate, measure distances (ranging), communicate with or detect o ...

(which may confuse the guidance system of cetaceans), development, construction and the like. Some fishing restrictions include "no-take" zones, which means that no fishing is allowed. Less than 1% of US MPAs are no-take. Ship transit can also be restricted or banned, either as a preventive measure or to avoid direct disturbance to individual species. The degree to which environmental regulations affect shipping varies according to whether MPAs are located in

territorial waters The term territorial waters is sometimes used informally to refer to any area of water over which a sovereign state has jurisdiction, including internal waters, the territorial sea, the contiguous zone, the exclusive economic zone, and potenti ...

, exclusive economic zones, or the

high seas The terms international waters or transboundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed regiona ...

. The law of the sea regulates these limits. Most MPAs have been located in territorial waters, where the appropriate government can enforce them. However, MPAs have been established in exclusive economic zones and in

international waters The terms international waters or transboundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed regiona ...

. For example, Italy, France and Monaco in 1999 jointly established a cetacean sanctuary in the

Ligurian Sea The Ligurian Sea ( it, Mar Ligure; french: Mer Ligurienne; lij, Mâ Ligure) is an arm of the Mediterranean Sea. It lies between the Italian Riviera (Liguria) and the island of Corsica. The sea is thought to have been named after the ancient ...

named the

Pelagos Sanctuary for Mediterranean Marine Mammals Originally called the International Ligurian Sea Cetacean Sanctuary (Ligurian Sea Sanctuary), what is now known as the Pelagos Sanctuary for Mediterranean Marine Mammals is a Marine Protected Area aimed at the protection of marine mammals (cetacean ...

. This sanctuary includes both national and international waters. Both the CBD and

IUCN The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

recommended a variety of management systems for use in a protected area system. They advocated that MPAs be seen as one of many "nodes" in a network of protected areas. The following are the most common management systems: Asinara-Island01

Seasonal and temporary management—Activities, most critically fishing, are restricted seasonally or temporarily, e.g., to protect spawning/nursing grounds or to let a rapidly reducing species recover. Multiple-use MPAs—These are the most common and arguably the most effective. These areas employ two or more protections. The most important sections get the highest protection, such as a no take zone and are surrounded with areas of lesser protections. Community involvement and related approaches—Community-managed MPAs empower local communities to operate partially or completely independent of the governmental jurisdictions they occupy. Empowering communities to manage resources can lower conflict levels and enlist the support of diverse groups that rely on the resource such as subsistence and commercial fishers, scientists, recreation, tourism businesses, youths and others. Mistrust between fishermen and regulating authorities is of central importance there, and needs to be addressed. Recent evidence from regions like Scandinavia, Spain, Portugal or Canada reveals success stories based on the tested cooperation between marine scientists and fishermen in jointly managing coastal marine reserves.

Marine Protected Area Networks

Marine Protected Area Networks or MPA networks have been defined as "A group of MPAs that interact with one another ecologically and/or socially form a network". These networks are intended to connect individuals and MPAs and promote education and cooperation among various administrations and user groups. "MPA networks are, from the perspective of resource users, intended to address both environmental and socio-economic needs, complementary ecological and social goals and designs need greater research and policy support". Filipino communities connect with one another to share information about MPAs, creating a larger network through the social communities' support. Emerging or established MPA networks can be found in

, Belize, the

Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; T ...

Gulf of Aden The Gulf of Aden ( ar, خليج عدن, so, Gacanka Cadmeed 𐒅𐒖𐒐𐒕𐒌 𐒋𐒖𐒆𐒗𐒒) is a deepwater gulf of the Indian Ocean between Yemen to the north, the Arabian Sea to the east, Djibouti to the west, and the Guardafui Channe ...

and Mexico.

Future approaches

To be truly representative of the ocean and its range of marine resources,

marine conservation Marine conservation, also known as ocean conservation, is the protection and preservation of ecosystems in oceans and seas through planned management in order to prevent the over-exploitation of these marine resources. Marine conservation is i ...

parks should encompass the great variety of ocean geological and geographical terrains, as these, in turn, influence the biosphere around them. As time progresses it would be strategically advantageous to develop parks that include oceanic features such as ocean ridges, ocean trenches,

island arc Island arcs are long chains of active volcanoes with intense seismic activity found along convergent tectonic plate boundaries. Most island arcs originate on oceanic crust and have resulted from the descent of the lithosphere into the mantle alon ...

systems, ocean

seamount A seamount is a large geologic landform that rises from the ocean floor that does not reach to the water's surface (sea level), and thus is not an island, islet or cliff-rock. Seamounts are typically formed from extinct volcanoes that rise abru ...

s, ocean plateaus, and

abyssal plain An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between and . Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth's surface. ...

s, which occupy half the earth's surface. Another factor that will influence the development of marine conservation areas is ownership. Who owns the world's oceans? Approximately 64% of the world's oceans are "

" and subject to regulations such as the Law of the Sea and the governance of UN bodies such as the

International Seabed Authority The International Seabed Authority (ISA) (french: Autorité internationale des fonds marins) is a Kingston, Jamaica-based intergovernmental body of 167 member states and the European Union established under the 1982 UN Convention on the Law of ...

. The remaining 36% of the ocean is under the governance of individual countries within their Exclusive Economic Zones (EEZs). Some individual national EEZ's cover very large areas, such as France and USA (>11 million km²), and Australia, Russia, UK, and Indonesia (>6 million km²). Some states have very small land areas but extremely large EEZ's such as Kiribati, the Federated States of Micronesia, Marshall Islands, and Cook Islands who have individual EEZ areas of between 1.9 and 3.5 million km². The national EEZ's are the ones where governance is easier, and agreements to create marine parks are within national jurisdictions, such as is the case with Marae Moana and the Cook islands. One alternative to imposing MPAs on an indigenous population is through the use of

Indigenous Protected Areas An Indigenous Protected Area (IPA) is a class of protected area used in Australia; each is formed by voluntary agreement with Indigenous Australians, and declared by Aboriginal Australians and Torres Strait Islander representative organisations ...

, such as those in Australia.

International efforts

The 17th

(IUCN) General Assembly in San Jose, California, the 19th IUCN assembly and the fourth World Parks Congress all proposed to centralise the establishment of protected areas. The

World Summit on Sustainable Development The World Summit on Sustainable Development 2002, took place in South Africa, from 26 August to 4 September 2002. It was convened to discuss ustainable developmentorganizations, 10 years after the first Earth Summit in Rio de Janeiro. (It was the ...

in 2002 called for The Evian agreement, signed by G8 Nations in 2003, agreed to these terms. The Durban Action Plan, developed in 2003, called for regional action and targets to establish a network of protected areas by 2010 within the jurisdiction of regional environmental protocols.It recommended establishing protected areas for 20 to 30% of the world's oceans by the goal date of 2012. The

considered these recommendations and recommended requiring countries to set up marine parks controlled by a central organization before merging them. The

United Nations Framework Convention on Climate Change The United Nations Framework Convention on Climate Change (UNFCCC) established an international environmental treaty to combat "dangerous human interference with the climate system", in part by stabilizing greenhouse gas concentrations in th ...

agreed to the terms laid out by the convention, and in 2004, its member nations committed to the following targets; *By 2006 complete an area system gap analysis at national and regional levels. *By 2008 address the less represented marine ecosystems, accounting for those beyond national jurisdiction in accordance. *By 2009 designate the protected areas identified through the gap analysis. *By 2012 complete the establishment of a comprehensive and ecologically representative network. Bunaken Marine Park

"The establishment by 2010 of terrestrial and by 2012 for marine areas of comprehensive, effectively managed, and ecologically representative national and regional systems of protected areas that collectively, inter alia through a global network, contribute to achieving the three objectives of the Convention and the 2010 target to significantly reduce the current late of
biodiversity loss Biodiversity loss includes the worldwide extinction of different species, as well as the local reduction or loss of species in a certain habitat, resulting in a loss of biological diversity. The latter phenomenon can be temporary or permanent, de ...
at the global, regional, national, and sub-national levels and contribute to poverty reduction and the pursuit of
sustainable development Sustainable development is an organizing principle for meeting human development goals while also sustaining the ability of natural systems to provide the natural resources and ecosystem services on which the economy and society depend. The des ...
."

Global goals

The UN later endorsed another decision, Decision VII/15, in 2006: The 10% conservation goal is also found in

Sustainable Development Goal 14 Sustainable Development Goal 14 (Goal 14 or SDG 14) is about "Life below water" and is one of the 17 Sustainable Development Goals established by the United Nations in 2015. The official wording is to "Conserve and sustainably use the oceans, seas ...

(which is part of the

) and which sets this 10% goal to a later date (2020). In 2017, the UN held the

United Nations Ocean Conference The 2017 United Nations Ocean Conference was a United Nations conference that took place on 5-9 June 2017 which sought to mobilize action for the conservation and sustainable use of the oceans, seas and marine resources. The Earth's waters are s ...

aiming to find ways and urge for the implementation of Sustainable Development Goal 14. In that 2017 conference, it was clear that just between 3.6 and 5.7% of the world's oceans were protected, meaning another 6.4 to 4.3% of the world's oceans needed to be protected within 3 years. The 10% protection goal is described as a "baby step" as 30% is the real amount of ocean protection scientists agree on that should be implemented.

Global treaties

United Nations Convention on the Law of the Sea

The Antarctic Treaty System

On 7 April 1982, the Convention on the Conservation of Antarctic Marine Living Resources (CAMLR Convention) came into force after discussions began in 1975 between parties of the then-current

Antarctic Treaty russian: link=no, Договор об Антарктике es, link=no, Tratado Antártico , name = Antarctic Treaty System , image = Flag of the Antarctic Treaty.svgborder , image_width = 180px , caption ...

to limit large-scale exploitation of

krill Krill are small crustaceans of the order Euphausiacea, and are found in all the world's oceans. The name "krill" comes from the Norwegian Norwegian, Norwayan, or Norsk may refer to: *Something of, from, or related to Norway, a country in n ...

by commercial fisheries. The Convention bound contracting nations to abide by previously agreed upon Antarctic territorial claims and peaceful use of the region while protecting ecosystem integrity south of the

Antarctic Convergence The Antarctic Convergence or Antarctic Polar Front is a marine belt encircling Antarctica, varying in latitude seasonally, where cold, northward-flowing Antarctic waters meet the relatively warmer waters of the sub-Antarctic. Antarctic waters pr ...

and 60 S latitude. In so doing, it also established a commission of the original signatories and acceding parties called the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) to advance these aims through protection, scientific study, and rational use, such as harvesting, of those marine resources. Though separate, the Antarctic Treaty and CCAMLR, make up part the broader system of international agreements called the Antarctic Treaty System. Since 1982, the CCAMLR meets annually to implement binding conservations measures like the creation of 'protected areas' at the suggestion of the convention's scientific committee. In 2009, the CCAMLR created the first 'high-seas' MPA entirely within international waters over the southern shelf of the South Orkney Islands. This area encompasses and all fishing activity including transhipment, and dumping or discharge of waste is prohibited with the exception of scientific research endeavors. On 28 October 2016, the CCAMLR, composed of 24 member countries and the European Union at the time, agreed to establish the world's largest marine park encompassing 1.55 million km² (600,000 sq mi) in the Ross Sea after several years of failed negotiations. Establishment of the Ross Sea MPA required unanimity of the commission members and enforcement will begin in December 2017. However, due to a sunset provision inserted into the proposal, the new marine park will only be in force for 35 years.

National Targets

Many countries have established national targets, accompanied by action plans and implementations. The UN Council identified the need for countries to collaborate with each other to establish effective regional conservation plans. Some national targets are listed in the table below The prevalent practice of area-based targets was criticized in 2019 by a group of environmental scientists because politicians tended to protect parts of the oceans where little fishing happened to meet the goals. The lack of fishing in these areas made them easy to protect, but it also had little positive impact.

Regional and national efforts

The marine protected area network is still in its infancy. As of October 2010, approximately 6,800 MPAs had been established, covering 1.17% of global ocean area. Protected areas covered 2.86% of exclusive economic zones (EEZs). MPAs covered 6.3% of territorial seas. Many prohibit the use of harmful fishing techniques yet only 0.01% of the ocean's area is designated as a "no take zone". This coverage is far below the projected goal of 20%-30% Those targets have been questioned mainly due to the cost of managing protected areas and the conflict that protections have generated with human demand for marine goods and services.

Africa

South Africa

Greater Caribbean

The Greater Caribbean subdivision encompasses an area of about of ocean and 38 nations. The area includes island countries like the

Bahamas The Bahamas (), officially the Commonwealth of The Bahamas, is an island country within the Lucayan Archipelago of the West Indies in the Atlantic Ocean, North Atlantic. It takes up 97% of the Lucayan Archipelago's land area and is home to ...

and

Cuba Cuba ( , ), officially the Republic of Cuba ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Juventud and several minor archipelagos. Cuba is located where the northern Caribbea ...

, and the majority of

Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...

. The Convention for Protection and Development of the Marine Environment of the Wider Caribbean Region (better known as the Cartagena Convention) was established in 1983. Protocols involving protected areas were ratified in 1990. As of 2008, the region hosted about 500 MPAs.

Coral reef A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Co ...

s are the best represented. Two networks are under development, the

Mesoamerican Barrier Reef System The Mesoamerican Barrier Reef System (MBRS), also popularly known as the Great Mayan Reef or Great Maya Reef, is a marine region that stretches over along the coasts of four countries – Mexico, Belize, Guatemala, and Honduras – from Isla ...

(a long

barrier reef A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Co ...

that borders the coast of much of Central America), and the "Islands in the Stream" program (covering the

Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an oceanic basin, ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of ...

Asia

Southeast Asia is a global epicenter for marine diversity. 12% of its coral reefs are in MPAs. The Philippines have some the world's best coral reefs and protect them to attract international tourism. Most of the Philippines' MPAs are established to secure protection for its coral reef and

sea grass Seagrasses are the only flowering plants which grow in marine environments. There are about 60 species of fully marine seagrasses which belong to four families (Posidoniaceae, Zosteraceae, Hydrocharitaceae and Cymodoceaceae), all in the orde ...

habitats. Indonesia has MPAs designed for tourism and relies on tourism as a main source of income.

China

China has developed its unique MPA management system, which divides MPAs into two main categories: Marine Natural Reserves (MNRs) and Special Marine Protected Areas (SMPAs). As of 2016, China has designated 267 MPAs, including 160 MNRs and 107 SMPAs, covering nearly 4% of the sea area. MNRs are the no-take areas under comprehensive protection that prohibit any kind of resource exploitation. Unlike such traditional MPAs, SMPAs have been established in China since 2002. SMPAs allow the use of marine resources in a supervised and sustainable way, aiming at reducing local development conflicts caused by MNRs (such as the survival of coastal fishermen) and greater matching of national economic development strategies. Depending on local ecological considerations, SMPAs will subdivide into different functional zones. Areas with rare and endangered species or damaged and fragile environments are strict no-take areas and ecological restoration areas, while other areas will be considered sustainable resource use zone for current use and reserved zone for future use. Despite all the efforts, as China constructs MPA based on administrative hierarchy (national, provincial, municipal, and county), there exist problems of fragmentized division and inconsistent enforcement of MPAs.

Philippines

The

host one of the most highly biodiverse regions, with 464 reef-building coral species. Due to overfishing, destructive fishing techniques, and rapid coastal development, these are in rapid decline. The country has established some 600 MPAs. However, the majority are poorly enforced and are highly ineffective. However, some have positively impacted reef health, increased fish biomass, decreased coral bleaching and increased yields in adjacent fisheries. One notable example is the MPA surrounding Apo Island.

Latin America

Latin America Latin America or * french: Amérique Latine, link=no * ht, Amerik Latin, link=no * pt, América Latina, link=no, name=a, sometimes referred to as LatAm is a large cultural region in the Americas where Romance languages — languages derived f ...

has designated one large MPA system. As of 2008, 0.5% of its marine environment was protected, mostly through the use of small, multiple-use MPAs. Mexico designed a Marine Strategy that goes from the years 2018-2021.

Pacific Ocean

Governments in the "South Pacific network" (ranging from

Belize Belize (; bzj, Bileez) is a Caribbean and Central American country on the northeastern coast of Central America. It is bordered by Mexico to the north, the Caribbean Sea to the east, and Guatemala to the west and south. It also shares a wate ...

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

) adopted the Lima convention and action plan in 1981. An MPA-specific protocol was ratified in 1989. The permanent commission on the exploitation and conservation on the marine resources of the South Pacific promotes the exchange of studies and information among participants. Tall Cliffs

The region is currently running one comprehensive cross-national program, the Tropical Eastern Pacific Marine Corridor Network, signed in April 2004. The network covers about . The

Marae Moana Marae Moana is a multiple-use marine protected area created on 13 July 2017, when the Parliament of the Cook Islands passed a bill creating the largest multiple-use marine protected area in the world at the time of its passage. Marae Moana cover ...

Conservation Park in

Cook Islands ) , image_map = Cook Islands on the globe (small islands magnified) (Polynesia centered).svg , capital = Avarua , coordinates = , largest_city = Avarua , official_languages = , lan ...

has many stakeholders within its governance structure, including a variety of Government Ministries, NGOs, traditional landowners, and society representatives. The Marae Moana conservation area is managed through a spatial zoning principle, whereby specific designations are given to specific zones, though these designations may change over time. For example, some areas may allow fishing, whilst fishing may be prohibited in other areas. The "North Pacific network" covers the western coasts of Mexico, Canada, and the U.S. The "Antigua Convention" and an action plan for the north Pacific region were adapted in 2002. Participant nations manage their own national systems. In 2010–2011, the State of California completed hearings and actions via the state Department of Fish and Game to establish new MPAs.

Indian Ocean

In exchange for some of its national debt being written off, the

Seychelles Seychelles (, ; ), officially the Republic of Seychelles (french: link=no, République des Seychelles; Creole: ''La Repiblik Sesel''), is an archipelagic state consisting of 115 islands in the Indian Ocean. Its capital and largest city, V ...

designates two new marine protected areas in the

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by th ...

, covering about . It is the result of a financial deal, brokered in 2016 by

The Nature Conservancy The Nature Conservancy (TNC) is a global environmental organization headquartered in Arlington, Virginia. it works via affiliates or branches in 79 countries and territories, as well as across every state in the US. Founded in 1951, The Natu ...

. In 2021

announced the creation of 2 national marine parks in size of 740,000 square kilometers. With those parks 45% of the Australian marine territory will be protected. Ten countries in the Western Indian Ocean have launched the "Great Blue Wall" initiative, which seeks to create a network of linked MPAs throughout the region. These are generally expected to be under

IUCN category IV IUCN protected area categories, or IUCN protected area management categories, are categories used to classify protected areas in a system developed by the International Union for Conservation of Nature (IUCN). The enlisting of such areas is par ...

protection, which allows for local fishing but prohibits industrial exploitation.

Mediterranean Sea

The Natura 2000 ecological MPA network in the

European Union The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been des ...

included MPAs in the

North Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Africa, Europe and ...

, the

Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the ea ...

and the

Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from ...

. The member states had to define NATURA 2000 areas at sea in their Exclusive Economic Zone. Two assessments, conducted thirty years apart, of three Mediterranean MPAs, demonstrate that proper protection allows commercially valuable and slow-growing red coral (''

Corallium rubrum Precious coral, or red coral, is the common name given to a genus of marine corals, ''Corallium''. The distinguishing characteristic of precious corals is their durable and intensely colored red or pink-orange skeleton, which is used for m ...

'') to produce large colonies in shallow water of less than . Shallow-water colonies outside these decades-old MPAs are typically very small. The MPAs are

Banyuls Banyuls-sur-Mer (; ) is a commune in the Pyrénées-Orientales department in southern France. It was first settled by Greeks starting in 400 BCE. Geography Location Banyuls-sur-Mer is located in the canton of La Côte Vermeille and in the a ...

, Carry-le-Rouet and Scandola, off the island of

Corsica Corsica ( , Upper , Southern ; it, Corsica; ; french: Corse ; lij, Còrsega; sc, Còssiga) is an island in the Mediterranean Sea and one of the 18 regions of France. It is the fourth-largest island in the Mediterranean and lies southeast of ...

. * The

Mediterranean Science Commission The Mediterranean Science Commission, or CIESM, (French: ''Commission Internationale pour l'Exploration Scientifique de la Méditerranée'') unites 24 Member States, hundreds of marine Institutes, and thousands of marine researchers from all sho ...

proposed the creation of eight large, international, MPAs ("CIESM Marine Peace Parks") with the dual benefits of protecting unique oceanographic features and mitigating trans-frontier conflicts * WWF together with other partners proposed the creation of

MedPan The Mediterranean Protected Areas Network (MedPAN) is one of the main non-governmental organizations dedicated to the protection of nature in the Mediterranean. Mission Its mission is to promote the establishment, maintenance and operation of a ...

(Mediterranean Network of Marine Protected Areas Managers) which aims to protect 10% of the surface of the Mediterranean by 2020. A 2018 study published in

Science Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for ...

found that trawling is more intense inside official EU marine sanctuaries and that endangered fish species such as sharks and rays are more common outside them.

United States

As of June 2020, 26% of U.S. waters (including the

) wwere in an MPA. Only 3% of US waters are no-take MPAs. Almost all of the no-take zones are located in two large MPAs in the remote Pacific Ocean, Papahānaumokuākea Marine National Monument and

United Kingdom and British Overseas Territories

Near half of England's seas are MPAs. Those MPAs only ban in specific places some of the most damaging activities. In 2020, Greenpeace revealed that in 2019 the UK legally allowed industrial boats to fish in the Marine protected area. This point is related to the concern of overfishing, while fishing is an object to the ongoing trade negotiations between the EU and the UK. Result of those negotiations might replace Common Fisheries Policy in the UK.

United Kingdom

There are a number of marine protected areas around the

coastline of the United Kingdom The coastline of the United Kingdom is formed by a variety of natural features including islands, bays, headlands and peninsulas. It consists of the coastline of the island of Great Britain and the north-east coast of the island of Ireland, a ...

, known as

Marine Conservation Zone A Marine Conservation Zone (MCZ) is a type of marine nature reserve in UK waters. They were established under the Marine and Coastal Access Act (2009) and are areas designated with the aim to protect nationally important, rare or threatened habit ...

s in England, Wales, and Northern Ireland, and

Marine Protected Area Marine protected areas (MPA) are protected areas of seas, oceans, estuaries or in the US, the Great Lakes. These marine areas can come in many forms ranging from wildlife refuges to research facilities. MPAs restrict human activity for a conse ...

s in Scotland. They are to be found in inshore and offshore waters. In June 2020, a review led by

Richard Benyon Richard Henry Ronald Benyon, Baron Benyon (born 21 October 1960) is a British politician who has served as Minister of State for Biosecurity, Marine and Rural Affairs since 2022. A member of the Conservative Party, he was Member of Parliament ...

MP, stated that nearly 50 areas around the UK coastline should become Highly Protected Marine Areas (HPMAs). This would see the banning of dredging, sewage dumping, drilling, offshore wind-turbine construction and catch-and-release sea fishing.

British Overseas Territories

The United Kingdom is also creating marine protected reserves around several

British Overseas Territories The British Overseas Territories (BOTs), also known as the United Kingdom Overseas Territories (UKOTs), are fourteen dependent territory, territories with a constitutional and historical link with the United Kingdom. They are the last remna ...

. The UK is responsible for 6.8 million square kilometres of ocean around the world, larger than all but four other countries. In 2016 the UK government established the Blue Belt Programme to enhance the protection and management of the marine environment. The

Chagos Marine Protected Area The Chagos Marine Protected Area, located in the central Indian Ocean in the British Indian Ocean Territory of the United Kingdom, is one of the world's largest marine protected areas, and one of the largest protected areas of any type (land or se ...

in the Indian Ocean was established in 2010 as a "no-take-zone". With a total surface area of , it was the world's largest contiguous marine reserve. In March 2015, the UK announced the creation of a marine reserve around the Pitcairn Islands in the Southern Pacific Ocean to protect its special biodiversity. The area of surpassed the Chagos Marine Protected Area as the world's largest contiguous marine reserve, until the August 2016 expansion of the Papahānaumokuākea Marine National Monument in the United States to . In January 2016, the UK government announced the intention to create a marine protected area around Ascension Island. The protected area will be , half of which will be closed to fishing. On 13 November 2020 it was announced that the of the waters surrounding the

Tristan da Cunha Tristan da Cunha (), colloquially Tristan, is a remote group of volcanic islands in the South Atlantic Ocean. It is the most remote inhabited archipelago in the world, lying approximately from Cape Town in South Africa, from Saint Helena ...

and neighboring islands will become a Marine Protection Zone. The move will make the zone the largest no-take zone in the Atlantic and the fourth largest on the planet.

Notable marine protected areas

* The Bowie Seamount Marine Protected Area off the

coast of British Columbia , settlement_type = Region of British Columbia , image_skyline = , nickname = "The Coast" , subdivision_type = Country , subdivision_name = Canada , subdivision_type1 = Province , subdivision_name1 = British ...

, Canada. * The

Great Barrier Reef Marine Park The Great Barrier Reef Marine Park protects a large part of Australia's Great Barrier Reef from damaging activities. It is a vast multiple-use Marine Park which supports a wide range of uses, including commercial marine tourism, fishing, ports an ...

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

, Australia. * The

Ligurian Sea Cetacean Sanctuary Originally called the International Ligurian Sea Cetacean Sanctuary (Ligurian Sea Sanctuary), what is now known as the Pelagos Sanctuary for Mediterranean Marine Mammals is a Marine Protected Area aimed at the protection of marine mammals (cetacean ...

in the seas of Italy,

Monaco Monaco (; ), officially the Principality of Monaco (french: Principauté de Monaco; Ligurian: ; oc, Principat de Mónegue), is a sovereign city-state and microstate on the French Riviera a few kilometres west of the Italian region of Lig ...

and France. * The

Dry Tortugas National Park Dry Tortugas National Park is a national park located about west of Key West in the Gulf of Mexico. The park preserves Fort Jefferson and the seven Dry Tortugas islands, the westernmost and most isolated of the Florida Keys. The archipelago' ...

in the Florida Keys, USA. * The Papahānaumokuākea Marine National Monument in

. * The

Kiribati Kiribati (), officially the Republic of Kiribati ( gil, ibaberikiKiribati),Kiribati
''The Wor ...

. * The

Channel Islands National Marine Sanctuary The Channel Islands National Marine Sanctuary is a sanctuary off the Pacific coast of Southern California. The National Marine Sanctuary program is under the administration of the National Oceanic and Atmospheric Administration. Established ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, USA. * The

in the

. *The Wadden Sea bordering the

North Sea The North Sea lies between Great Britain, Norway, Denmark, Germany, the Netherlands and Belgium. An epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian S ...

in the Netherlands, Germany, and Denmark.

Marine protected areas as percentage of territorial waters

The following shows a list of countries and their marine protected areas as percentage of their territorial waters (click "show" to expand).

Assessment

Managers and scientists use

geographic information system A geographic information system (GIS) is a type of database containing Geographic data and information, geographic data (that is, descriptions of phenomena for which location is relevant), combined with Geographic information system software, sof ...

s and

remote sensing Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation. The term is applied especially to acquiring information about Earth ...

to map and analyze MPAs. NOAA Coastal Services Center compiled an "Inventory of GIS-Based Decision-Support Tools for MPAs". The report focuses on GIS tools with the highest utility for MPA processes. Remote sensing uses advances in

aerial photography Aerial photography (or airborne imagery) is the taking of photographs from an aircraft or other airborne platforms. When taking motion pictures, it is also known as aerial videography. Platforms for aerial photography include fixed-wing aircra ...

image capture This is a list of macOS built-in apps and system components. Applications App Store The Mac App Store is macOS's digital distribution platform for macOS apps, created and maintained by Apple Inc. based on the iOS version, the platform was an ...

, pop-up archival satellite tags,

satellite A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotope ...

imagery Imagery is visual symbolism, or figurative language that evokes a mental image or other kinds of sense impressions, especially in a literary work, but also in other activities such as psychotherapy. Forms There are five major types of sensory im ...

, acoustic data, and

radar imagery Imaging radar is an application of radar which is used to create two-dimensional images, typically of landscapes. Imaging radar provides its light to illuminate an area on the ground and take a picture at radio wavelengths. It uses an antenna and ...

. Mathematical models that seek to reflect the complexity of the natural setting may assist in planning harvesting strategies and sustaining fishing grounds. Other techniques such as on-site monitoring sensors,

crowdsensing Crowdsensing, sometimes referred to as mobile crowdsensing, is a technique where a large group of individuals having mobile devices capable of sensing and computing (such as smartphones, tablet computers, wearables) collectively share data and extra ...

via local people, research and sampling endeavors, autonomous ships and underwater robots (

UAV An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs are a component of an unmanned aircraft system (UAS), which includes adding a ground-based controlle ...

) could also be used and developed. Such data can then be used for assessing marine protection-quality and -extents. In 2021, 43 expert scientists published the first scientific framework version that – via integration,

review A review is an evaluation of a publication, product, service, or company or a critical take on current affairs in literature, politics or culture. In addition to a critical evaluation, the review's author may assign the work a rating to indi ...

, clarifications and

standardization Standardization or standardisation is the process of implementing and developing technical standards based on the consensus of different parties that include firms, users, interest groups, standards organizations and governments. Standardization ...

– enables coherent evaluation of levels of protection of marine protected areas and serve as a guide for improving, planning and monitoring these such as in efforts towards the 30%-protection-goal of the "Global Deal For Nature" and the UN's

Coral reefs

Coral reef systems have been in decline worldwide. Causes include overfishing, pollution and

. As of 2013 30% of the world's reefs were severely damaged. Approximately 60% will be lost by 2030 without enhanced protection. Marine reserves with "no take zones" are the most effective form of protection. Only about 0.01% of the world's coral reefs are inside effective MPAs.

Fish

MPAs can be an effective tool to maintain fish populations; see

refuge (ecology) A refuge is a concept in ecology, in which an organism obtains protection from predation by hiding in an area where it is inaccessible or cannot easily be found. Due to population dynamics, when refuges are available, populations of both predator ...

. The general concept is to create overpopulation within the MPA. The fish expand into the surrounding areas to reduce crowding, increasing the population of unprotected areas. This helps support local fisheries in the surrounding area, while maintaining a healthy population within the MPA. Such MPAs are most commonly used for coral reef ecosystems. One example is at Goat Island Bay in New Zealand, established in 1977. Research gathered at Goat Bay documented the spillover effect. "Spillover and larval export—the drifting of millions of eggs and larvae beyond the reserve—have become central concepts of marine conservation". This positively impacted commercial fishermen in surrounding areas. Another unexpected result of MPAs is their impact on predatory marine species, which in some conditions can increase in population. When this occurs, prey populations decrease. One study showed that in 21 out of 39 cases, "trophic cascades", caused a decrease in herbivores, which led to an increase in the quantity of plant life. (This occurred in the Malindi Kisite and Watamu Marian National Parks in Kenya; the Leigh Marine Reserve in New Zealand; and Brackett's Landing Conservation Area in the US.

Success criteria

Both CBD and

have criteria for setting up and maintaining MPA networks, which emphasize four factors: The

defines a ''protected area'' as:

"A clearly defined geographical space, recognized, dedicated, and managed, through legal or effective means, to achieve the long-term conservation of nature with associated ecosystem service and cultural value."

*Adequacy—ensuring that the sites have the size, shape, and distribution to ensure the success of selected species. *Representability—protection for all of the local environment's biological processes *Resilience—the resistance of the system to natural disaster, such as a tsunami or flood. *Connectivity—maintaining population links across nearby MPAs.

Misconceptions

Misconceptions about MPAs include the belief that all MPAs are no-take or no-fishing areas. Less than 1 percent of US waters are no-take areas. MPA activities can include consumption fishing, diving and other activities. Another misconception is that most MPAs are federally managed. Instead, MPAs are managed under hundreds of laws and jurisdictions. They can exist in state, commonwealth, territory and tribal waters. Another misconception is that a federal mandate dedicates a set percentage of ocean to MPAs. Instead the mandate requires an evaluation of current MPAs and creates a public resource on current MPAs.

Criticism

Land use right

Some existing and proposed MPAs have been criticized by indigenous populations and their supporters, as impinging on land usage rights. For example, the proposed Chagos Protected Area in the Chagos Islands is contested by

Chagossians The Chagossians (also Îlois or Chagos Islanders) are a currently exiled Creole ethnic group native to the Chagos Islands, specifically Diego Garcia, Peros Banhos, and the Salomon island chain, as well as other parts of the Chagos Archipelago ...

deported from their homeland in 1965 by the

British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...

as part of the creation of the

British Indian Ocean Territory The British Indian Ocean Territory (BIOT) is an Overseas Territory of the United Kingdom situated in the Indian Ocean, halfway between Tanzania and Indonesia. The territory comprises the seven atolls of the Chagos Archipelago with over 1,000 ...

(BIOT). According to

WikiLeaks WikiLeaks () is an international Nonprofit organization, non-profit organisation that published news leaks and classified media provided by anonymous Source (journalism), sources. Julian Assange, an Australian Internet activism, Internet acti ...

CableGate The United States diplomatic cables leak, widely known as Cablegate, began on Sunday, 28 November 2010 when WikiLeaks began releasing classified cables that had been sent to the U.S. State Department by 274 of its consulates, embassies, and ...

documents,
> the UK proposed that the BIOT become a "marine reserve" with the aim of preventing the former inhabitants from returning to their lands and to protect the joint UK/US military base on

Diego Garcia Diego Garcia is an island of the British Indian Ocean Territory, a disputed overseas territory of the United Kingdom. It is a militarised atoll just south of the equator in the central Indian Ocean, and the largest of the 60 small islands of ...

Island.

Climate change

Oceans are the primary carbon sink and have been greatly affected by global warming, especially in recent years. The ability of existing MPA designs to cope with changes in marine biodiversity due to ocean acidification, sea level rise, sea surface temperature increase, oxygen reduction, and other marine environmental issues remains questionable. Despite differences in species adaptations, warming has affected the habitats of some marine species, such as corals, to move from lower to higher latitudes. If MPA assumes a relatively stable ecological environment within the area as before, it may become ineffective when the range of species distribution changes or becomes extensive. Hence, there's need to incorporate the climate change adaptation to the framework.

Other critiques

Other critiques include: their cost (higher than that of passive management), conflicts with human development goals, inadequate scope to address factors such as climate change and invasive species. In Scotland, environmental groups have criticised the government for failing to enforce fishing rules around MPAs.

References

Sources

* * *

External links

*
Marine Protected Areas
by Project Regeneration
Marine Protection Atlas
- an online tool from the

Marine Conservation Institute Marine Conservation Institute (formerly Marine Conservation Biology Institute) is a tax-exempt nonprofit ocean conservation organization working to identify and protect vulnerable ocean ecosystems worldwide. The organization is headquartered in Se ...

that provides information on the world's protected areas and global MPA campaigns. Information comes from a variety of sources, including the

World Database on Protected Areas The World Database on Protected Areas (WDPA) is the largest assembly of data on the world's terrestrial and marine protected areas, containing more than 260,000 protected areas as of August 2020, with records covering 245 countries and territori ...

(WDPA), and many regional and national databases. *Marine protected areas - viewable vi
Protected Planet
an online interactive search engine hosted by the United Nations Environment Programme's World Conservation Monitoring Center (

UNEP-WCMC The UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC) is a collaboration centre of UN Environment Programme, based in Cambridge in the United Kingdom. UNEP-WCMC has been part of UN Environment Programme since 2000, and has r ...

). {{DEFAULTSORT:Marine Protected Area Marine conservation Protected areas Oceanography Fisheries science Fisheries law

Terminology

History

Classifications

Stressors

Economics

Management

Marine Protected Area Networks

Future approaches

International efforts

Global goals

Global treaties

United Nations Convention on the Law of the Sea

The Antarctic Treaty System

National Targets

Regional and national efforts

Africa

South Africa

Greater Caribbean

Asia

China

Philippines

Latin America

Pacific Ocean

Indian Ocean

Mediterranean Sea

United States

United Kingdom and British Overseas Territories

United Kingdom

British Overseas Territories

Notable marine protected areas

Marine protected areas as percentage of territorial waters

Assessment

Coral reefs

Fish

Success criteria

Misconceptions

Criticism

Land use right

Climate change

Other critiques

See also

References

Sources

External links