The Gulf of Finland ( fi, Suomenlahti; et, Soome laht; rus, Фи́нский зали́в, r=Finskiy zaliv, p=ˈfʲinskʲɪj zɐˈlʲif; sv, Finska viken) is the easternmost arm of 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 ...

. It extends between

Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of B ...

to the north and

Estonia Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, a ...

to the south, to

Saint Petersburg Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

to the east, where the river

Neva The Neva (russian: Нева́, ) is a river in northwestern Russia flowing from Lake Ladoga through the western part of Leningrad Oblast (historical region of Ingria) to the Neva Bay of the Gulf of Finland. Despite its modest length of , it ...

drains into it. Other major cities around the gulf include

Helsinki Helsinki ( or ; ; sv, Helsingfors, ) is the Capital city, capital, primate city, primate, and List of cities and towns in Finland, most populous city of Finland. Located on the shore of the Gulf of Finland, it is the seat of the region of U ...

and

Tallinn Tallinn () is the most populous and capital city of Estonia. Situated on a bay in north Estonia, on the shore of the Gulf of Finland of the Baltic Sea, Tallinn has a population of 437,811 (as of 2022) and administratively lies in the Harju ' ...

. The eastern parts of the Gulf of Finland belong to Russia, and some of Russia's most important oil harbors are located farthest in, near Saint Petersburg (including Primorsk). As the seaway to Saint Petersburg, the Gulf of Finland has been and continues to be of considerable strategic importance to Russia. Some of the environmental problems affecting the Baltic Sea are at their most pronounced in the shallow gulf. Proposals for a tunnel through the gulf have been made.

Geography

The gulf has an area of . The length (from the

Hanko Peninsula The Hanko Peninsula ( fi, Hankoniemi; ), also spelled Hango, is the southernmost point of mainland Finland. The soil is a sandy moraine, the last tip of the Salpausselkä ridge, and vegetation consists mainly of pine and low shrubs. The penins ...

to Saint Petersburg) is and the width varies from near the entrance to on the meridian of

Moshchny Island Moshchny (russian: Мощный; fi, Lavansaari; sv, Lövskär, et, Lavassaar) is an island in the Gulf of Finland of the Baltic Sea, located some 120 km west of Saint Petersburg. The island is a part of the Leningrad Oblast, Russia. The a ...

; in the

Neva Bay The Neva Bay (Russian: Не́вская губа́, ''Névskaya Gubá''), also known as the Gulf of Kronstadt, is the easternmost part of the Gulf of Finland between Kotlin Island and the Neva River estuary where Saint Petersburg city centre is ...

, it decreases to . The gulf is relatively shallow, with the depth decreasing from the entrance to the gulf to the continent. The sharpest change occurs near

Narva-Jõesuu Narva-Jõesuu (; russian: Усть-Нарва, ''Ust'-Narva'', Нарва-Йыэсуу, Усть-Нарова) is a town in Ida-Viru County, in northeastern Estonia. Geography It is located on the country's northern Baltic coast of the Gul ...

, which is why this place is called the Narva wall. The average depth is with the maximum of . The depth of the Neva Bay is less than ; therefore, in March 2019, a channel was dug at the bottom for safe navigation. Because of the large influx of fresh water from rivers, especially from the Neva River (two-thirds of the total runoff), the gulf water has very low salinity – between 0.2 and 0.3 ‰ at the surface and 0.3–0.5 ‰ near the bottom. The average water temperature is close to in winter; in summer, it is at the surface and at the bottom. Parts of the gulf can freeze from late November to late April; the freezing starts in the east and gradually proceeds to the west. Complete freezing usually occurs by late January, and it may not occur in mild winters. Frequent strong western winds cause waves, surges of water and floods.Darinskii, A. V
''Leningrad Oblast''
Lenizdat, 1975 The northern coast of the gulf is high and winding, with abundant small bays and skerries, but only a few large bays (

Vyborg Vyborg (; rus, Вы́борг, links=1, r=Výborg, p=ˈvɨbərk; fi, Viipuri ; sv, Viborg ; german: Wiborg ) is a town in, and the administrative center of, Vyborgsky District in Leningrad Oblast, Russia. It lies on the Karelian Isthmus n ...

) and peninsulas (Hanko and Porkkalanniemi). The coast is mostly sloping; there are abundant sandy dunes, with occasional pine trees. The southern shores are smooth and shallow, but along the entire coast runs a limestone escarpment, the

Baltic Klint The Baltic Klint (Clint, Glint; et, Balti klint, sv, Baltiska klinten, russian: Балтийско-Ладожский уступ, Глинт) is an erosional limestone escarpment and cuesta on several islands of the Baltic Sea, in Estonia, in ...

, with a height up to . In the east, the gulf ends with Neva Bay; in the west it merges with the Baltic Sea. The gulf contains numerous banks, skerries and islands. The largest include Kotlin Island with the city of

Kronstadt Kronstadt (russian: Кроншта́дт, Kronshtadt ), also spelled Kronshtadt, Cronstadt or Kronštádt (from german: link=no, Krone for " crown" and ''Stadt'' for "city") is a Russian port city in Kronshtadtsky District of the federal city ...

(population 42,800),

Beryozovye Islands Beryozovye Islands (russian: Берёзовые острова, Finnish: Koivisto, Swedish: Björkö; literally: "Birch Islands"), alternatively spelled Berezovye Islands, is an island group in Leningrad Oblast, Russia. The islands are situated at ...

, Lisiy Island,

Maly Vysotsky Island Maly Vysotsky Island or Malyj Vysotskij Island (, ) is an island in northwest Russia, that was leased to Finland. It is located in Vyborg Bay, next to Vysotsk, 12 km (7 miles) southwest of Vyborg. Between 1918 and 1940, the island was a pa ...

with the nearby city of

Vysotsk Vysotsk (russian: Высо́цк; fi, Uuras; sv, Trångsund) is a coastal town and a seaport in Vyborgsky District of Leningrad Oblast, Russia, located on the Karelian Isthmus, on the eastern shore of the Vyborg Bay, southwest of Vyborg and nor ...

(population 1706),

Gogland Gogland or Hogland (russian: Гогланд, transliteration from original sv, Hogland; fi, Suursaari) is an island in the Gulf of Finland in the eastern Baltic Sea, about 180 km west from Saint Petersburg and 35 km from the coas ...

(Suursaari), Moshtchny (Lavansaari),

Bolshoy Tyuters Bolshoi Tyuters (russian: Большой Тютерс; fi, Tytärsaari; et, Suur Tütarsaar; sv, Tyterskär) is an island in the Gulf of Finland of the Baltic Sea, located away from the coast of Finland, to the south-east from Hogland. The is ...

(Tytärsaari),

Sommers Sommers (russian: Соммерс, fi, Someri, sv, Sommarö) is an islet and a lighthouse in the eastern part of the Gulf of Finland, an arm of the Baltic Sea, just outside the Gulf of Vyborg, about 19 kilometres south of Virolahti, Finlan ...

, Naissaar,

Kimitoön Kimitoön ( fi, Kemiönsaari) is a municipality and island of Finland. It was created on 1 January 2009, when the municipalities of Dragsfjärd, Kimito and Västanfjärd were consolidated into a single municipality. The municipality is located in ...

Kökar Kökar () is an island municipality to the south-east of the Åland archipelago, Finland. It is also one of the municipalities of Åland. It is reachable by boat from Långnäs on Åland or from Galtby with access to mainland Finland. The munic ...

Seskar Seskar ( fi, Seiskari) ( sv, Seitskär) (russian: Сескар) is an island in the Gulf of Finland, part of the Leningrad Oblast of Russia. The island was an independent municipality of Finland populated by Finns at least since 16th century, un ...

(Seiskari),

Pakri Islands , image_name = , image_caption = , image_size = , map_image = Pakri location map.svg , map_caption = , native_name = Pakri saared , native_name_link = , sobriquet = , location = Baltic Sea , ...

and others.Atlas of the USSR. – M.: GUGK, 1984 Starting in 1700, Russia constructed nineteen

artificial island An artificial island is an island that has been constructed by people rather than formed by natural means. Artificial islands may vary in size from small islets reclaimed solely to support a single pillar of a building or structure to those th ...

s with fortresses in the gulf. They aimed to defend Russia from maritime attacks, especially in the context of the

Great Northern War The Great Northern War (1700–1721) was a conflict in which a coalition led by the Tsardom of Russia successfully contested the supremacy of the Swedish Empire in Northern, Central and Eastern Europe. The initial leaders of the anti-Swedi ...

of 1700–1721. Such fortresses include Fort Alexander, Krasnaya Gorka, Ino, Totleben and . The largest rivers flowing into the gulf are the

(from the east), the

Narva Narva, russian: Нарва is a municipality and city in Estonia. It is located in Ida-Viru county, at the eastern extreme point of Estonia, on the west bank of the Narva river which forms the Estonia–Russia international border. With 54 ...

(from the south), and the

Kymi Kymi may refer to: *Kymi, Greece, a town in Euboea, Greece *Kymi, Finland, a former municipality in Finland *Kymi (constituency), a constituency in the Finnish Parliament *Kymi (region), or ''Kymenlaakso'', the region of Finland *Kymi B.C., a basket ...

(from the north).

Keila Keila (german: Kegel) is a town and an urban municipality in Harju County in north-western Estonia, 25 km southwest of Tallinn. Keila is also the location of administrative buildings of the surrounding Keila Parish, a rural municipality se ...

Pirita Pirita is one of the eight administrative districts ( et, linnaosa) of Tallinn, the capital of Estonia. Pirita occupies a relatively big area, but compared to other districts of Tallinn its population of 17,592 (as of 1 November 2014) is relati ...

, Jägala, Kunda, Luga, Sista and Kovashi flow into the gulf from the south. From the north flow the Sestra River,

Porvoo Porvoo (; sv, Borgå ; la, Borgoa) is a city and a municipality in the Uusimaa region of Finland, situated on the southern coast about east of the city border of Helsinki and about from the city centre. Porvoo was one of the six medieval to ...

Vantaa Vantaa (; sv, Vanda, ) is a city and Municipalities of Finland, municipality in Finland. It is part of the inner core of the Greater Helsinki, Finnish Capital Region along with Helsinki, Espoo, and Kauniainen. With a population of (), Vantaa i ...

and several other small rivers. The

Saimaa Canal The Saimaa Canal ( fi, Saimaan kanava; sv, Saima kanal; russian: Сайменский канал) is a transportation canal that connects lake Saimaa with the Gulf of Finland near Vyborg, Russia. The canal was built from 1845 to 1856 and opene ...

connects the gulf with the

Saimaa Saimaa ( , ; sv, Saimen) is a lake located in the Finnish Lakeland area in southeastern Finland. At approximately , it is the largest lake in Finland, and the fourth largest natural freshwater lake in Europe. The name Saimaa likely comes from a ...

lake.

Extent

The

International Hydrographic Organization The International Hydrographic Organization (IHO) is an intergovernmental organisation representing hydrography. , the IHO comprised 98 Member States. A principal aim of the IHO is to ensure that the world's seas, oceans and navigable waters a ...

defines the western limit of the Gulf of Finland as a line running from

Spithami Spithami ( sv, Spithamn) is a village in Lääne-Nigula Parish, Lääne County, in northwestern Estonia. It was inhabited by Estonian Swedes until World War II World War II or the Second World War, often abbreviated as WWII or ...

(59°13'N), in Estonia, through the Estonian island of

Osmussaar Osmussaar ( sv, Odensholm, german: Odinsholm) is an Estonian island situated in the mouth of the Gulf of Finland in the Baltic Sea, 7.5 km off the Estonian mainland. Administratively the island is part of Lääne-Nigula Parish in Lään ...

from SE to NW and on to the SW extremity of

(22°54'E) in Finland.

Geological history

The modern depression can be traced to the incision of large rivers during the

Cenozoic The Cenozoic ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is characterised by the dominance of mammals, birds and flowering plants, a cooling and drying climate, and the current configura ...

prior to the

Quaternary glaciation The Quaternary glaciation, also known as the Pleistocene glaciation, is an alternating series of glacial and interglacial periods during the Quaternary period that began 2.58 Ma (million years ago) and is ongoing. Although geologists describ ...

. These rivers eroded the sedimentary strata above the

Fennoscandian Shield The Baltic Shield (or Fennoscandian Shield) is a segment of the Earth's crust belonging to the East European Craton, representing a large part of Fennoscandia, northwestern Russia and the northern Baltic Sea. It is composed mostly of Archean an ...

. In particular the eroded material was made up of Ediacaran (Vendian) and

Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...

-aged claystone and sandstone. As erosion progressed, the rivers encountered harder layers of

Ordovician The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start ...

-aged

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

, leading to the formation of the cliffs of

in northern

and

Ingria Ingria is a historical region in what is now northwestern European Russia. It lies along the southeastern shore of the Gulf of Finland, bordered by Lake Ladoga on the Karelian Isthmus in the north and by the River Narva on the border with Esto ...

. Subsequently, the depression was somewhat reshaped by glacier activities. Its retreat formed the

Littorina Sea Littorina Sea (also Litorina Sea) is a geological brackish water stage of the Baltic Sea, which existed around 7500–4000 BP and followed the Mastogloia Sea, a transitional stage of the Ancylus Lake. This stage and form of the body of wate ...

, whose water level was some 7–9 metres higher than the present level of the Baltic Sea. Some 4,000 years ago the sea receded and shoals in the gulf have become its islands. Later uplifting of the Baltic Shield skewed the surface of the gulf; for this reason, its ancient northern shores are significantly higher than the southern ones.Saint Petersburg: Encyclopedia. – Moscow: Russian Political Encyclopedia. 2006

Flora and fauna

The climate in the area is

humid continental climate A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers and freezing ...

, characterized by temperate to hot summers and cold, occasionally severe winters with regular precipitation. The vegetation is dominated by a mixture of coniferous and

deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...

forests and treeless coastal meadows and cliffs. The major forest trees are

pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanical Garden accep ...

, spruce,

birch A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 ...

willows Willows, also called sallows and osiers, from the genus ''Salix'', comprise around 400 speciesMabberley, D.J. 1997. The Plant Book, Cambridge University Press #2: Cambridge. of typically deciduous trees and shrubs, found primarily on moist s ...

rowan The rowans ( or ) or mountain-ashes are shrubs or trees in the genus ''Sorbus ''Sorbus'' is a genus of over 100 species of trees and shrubs in the rose family, Rosaceae. Species of ''Sorbus'' (''s.l.'') are commonly known as whitebeam, r ...

aspen Aspen is a common name for certain tree species; some, but not all, are classified by botanists in the section ''Populus'', of the '' Populus'' genus. Species These species are called aspens: *'' Populus adenopoda'' – Chinese aspen (Chin ...

common Common may refer to: Places * Common, a townland in County Tyrone, Northern Ireland * Boston Common, a central public park in Boston, Massachusetts * Cambridge Common, common land area in Cambridge, Massachusetts * Clapham Common, originally com ...

and gray alder. In the far eastern part of the gulf vegetation of the marshy areas consists mainly of

bulrush Bulrush is a vernacular name for several large wetland grass-like plants *Sedge family (Cyperaceae): **''Cyperus'' **'' Scirpus'' **''Blysmus'' **''Bolboschoenus'' **'' Scirpoides'' **'' Isolepis'' **'' Schoenoplectus'' **'' Trichophorum'' * T ...

and reeds, as well as fully aquatic plants, such as

white White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White o ...

and

yellow Yellow is the color between green and orange on the spectrum of light. It is evoked by light with a dominant wavelength of roughly 575585 nm. It is a primary color in subtractive color systems, used in painting or color printing. In the ...

waterlilies and acute sedge. Aquatic plants in the shallow waters of the gulf include ''

Ruppia ''Ruppia'', also known as the widgeonweeds, ditch grasses or widgeon grass, is the only extant genus in the family Ruppiaceae, with eight known species. These are aquatic plants widespread over much of the world. The genus name honours Heinrich ...

'' and spiny naiad.Gulf of Finland – Nature
Fingulf.ru. Retrieved on 2011-08-14. Fish species of the gulf include

Atlantic salmon The Atlantic salmon (''Salmo salar'') is a species of ray-finned fish in the family Salmonidae. It is the third largest of the Salmonidae, behind Siberian taimen and Pacific Chinook salmon, growing up to a meter in length. Atlantic salmon are ...

, viviparous eelpout,

gobies Gobiidae or gobies is a family of bony fish in the order Gobiiformes, one of the largest fish families comprising more than 2,000 species in more than 200 genera. Most of gobiid fish are relatively small, typically less than in length, and the ...

, belica,

loach Loaches are fish of the superfamily Cobitoidea. They are freshwater, benthic (bottom-dwelling) fish found in rivers and creeks throughout Eurasia and northern Africa. Loaches are among the most diverse groups of fish; the 1249 known species of ...

European chub ''Squalius cephalus'' is a European species of freshwater fish in the carp family Cyprinidae. It frequents both slow and moderate rivers, as well as canals and still waters of various kinds. This species is referred to as the common chub, Europe ...

common minnow The Eurasian minnow, minnow, or common minnow (''Phoxinus phoxinus'') is a small species of freshwater fish in the carp family Cyprinidae. It is the type species of genus ''Phoxinus''. It is ubiquitous throughout much of Eurasia, from Britain and ...

, silver bream, common dace,

ruffe The Eurasian ruffe (''Gymnocephalus cernua''), also known as ruffe or pope, is a freshwater fish found in temperate regions of Europe and northern Asia. It has been introduced into the Great Lakes of North America, reportedly with unfortuna ...

Crucian carp The crucian carp (''Carassius carassius'') is a medium-sized member of the common carp family Cyprinidae. It occurs widely in northern European regions. Its name derives from the Low German ''karusse'' or ''karutze'', possibly from Medieval L ...

, stickleback,

European smelt The smelt or European smelt (''Osmerus eperlanus'') is a species of fish in the family Osmeridae. Shape and appearance The body of the European smelt is typically 15 to 18 cm long, slender and slightly flattened on either side. Larger fi ...

common rudd The common rudd (''Scardinius erythrophthalmus'') is a bentho-pelagic freshwater fish, widely spread in Europe and middle Asia, around the basins of the North, Baltic, Black, Caspian and Aral seas. Identification Morphologically, this specie ...

brown trout The brown trout (''Salmo trutta'') is a European species of salmonid fish that has been widely introduced into suitable environments globally. It includes purely freshwater populations, referred to as the riverine ecotype, ''Salmo trutta'' morph ...

tench The tench or doctor fish (''Tinca tinca'') is a fresh- and brackish-water fish of the order Cypriniformes found throughout Eurasia from Western Europe including the British Isles east into Asia as far as the Ob and Yenisei Rivers. It is also ...

pipefish Pipefishes or pipe-fishes (Syngnathinae) are a subfamily of small fishes, which, together with the seahorses and seadragons (''Phycodurus'' and '' Phyllopteryx''), form the family Syngnathidae. Description Pipefish look like straight-bodied se ...

burbot The burbot (''Lota lota'') is the only gadiform (cod-like) freshwater fish Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%. These environments di ...

perch Perch is a common name for fish of the genus ''Perca'', freshwater gamefish belonging to the family Percidae. The perch, of which three species occur in different geographical areas, lend their name to a large order of vertebrates: the Per ...

gudgeon A gudgeon is a socket-like, cylindrical (i.e., ''female'') fitting attached to one component to enable a pivoting or hinging connection to a second component. The second component carries a pintle fitting, the male counterpart to the gudgeon, ...

, lumpsucker,

roach Roach may refer to: Animals * Cockroach, various insect species of the order Blattodea * Common roach (''Rutilus rutilus''), a fresh and brackish water fish of the family Cyprinidae ** ''Rutilus'' or roaches, a genus of fishes * California roach ...

lamprey Lampreys (sometimes inaccurately called lamprey eels) are an ancient extant lineage of jawless fish of the order Petromyzontiformes , placed in the superclass Cyclostomata. The adult lamprey may be characterized by a toothed, funnel-like s ...

, vendace,

garfish The garfish (''Belone belone''), also known as the garpike or sea needle, is a pelagic, oceanodromous needlefish found in brackish and marine waters of the Atlantic Ocean and the Mediterranean, Caribbean, Black, and Baltic Seas. Description The ...

common whitefish ''Coregonus lavaretus'' is a species of freshwater whitefish, in the family Salmonidae. It is the type species of its genus ''Coregonus''. There are widely different concepts about the delimitation of the species ''Coregonus lavaretus'' and abo ...

common bream The common bream, freshwater bream, bream, bronze bream, carp bream or sweaty bream (''Abramis brama''), is a European species of freshwater fish in the family Cyprinidae. It is now considered to be the only species in the genus ''Abramis''. ...

zander The zander (''Sander lucioperca''), sander or pikeperch, is a species of ray-finned fish from the family Percidae, which includes the perches, ruffes and darters. It is found in freshwater and brackish habitats in western Eurasia. It is a popul ...

orfe The ide (''Leuciscus idus''), or orfe, is a freshwater fish of the family Cyprinidae found in larger rivers, ponds, and lakes across Northern Europe and Asia. It has been introduced outside its native range into Europe, North America, and New Z ...

northern pike The northern pike (''Esox lucius'') is a species of carnivorous fish of the genus '' Esox'' (the pikes). They are typical of brackish and fresh waters of the Northern Hemisphere (''i.e.'' holarctic in distribution). They are known simply as a ...

spined loach The spined loach (''Cobitis taenia'') is a common freshwater fish in Europe. It is sometimes known as spotted weather loach, not to be confused with the "typical" weather loaches of the genus ''Misgurnus''. This is the type species of the spiny ...

sprat Sprat is the common name applied to a group of forage fish belonging to the genus '' Sprattus'' in the family Clupeidae. The term also is applied to a number of other small sprat-like forage fish ('' Clupeoides'', '' Clupeonella'', '' Corica'' ...

Baltic herring Atlantic herring (''Clupea harengus'') is a herring in the family Clupeidae. It is one of the most abundant fish species in the world. Atlantic herrings can be found on both sides of the Atlantic Ocean, congregating in large schools. They can ...

, sabre carp, common bleak, European eel and

Atlantic cod The Atlantic cod (''Gadus morhua'') is a benthopelagic fish of the family Gadidae, widely consumed by humans. It is also commercially known as cod or codling.Fishing page of Saint-Petersburg
. Fishers.spb.ru. Retrieved on 2011-08-14. Commercial fishing is carried out in spring and autumn.

Grey seal The grey seal (''Halichoerus grypus'') is found on both shores of the North Atlantic Ocean. In Latin Halichoerus grypus means "hook-nosed sea pig". It is a large seal of the family Phocidae, which are commonly referred to as "true seals" or " ...

and

ringed seal The ringed seal (''Pusa hispida'') is an earless seal inhabiting the Arctic and sub-Arctic regions. The ringed seal is a relatively small seal, rarely greater than 1.5 m in length, with a distinctive patterning of dark spots surrounded by light ...

are met in the gulf, but the latter is very rare.

History

Before 1700

Many ancient sites were discovered on the shores of the gulf dated to up to nine thousand years old. Humans began to inhabit these places soon after the ice age glaciers retreated and the water level of the

lowered to reveal the land. Remains of about 11

Neolithic The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several parts ...

settlements were found since 1905 in the mouth of the river

Sestra River (Leningrad Oblast) The Sestra (; or ; ) is a river in Vsevolozhsky and Vyborgsky Districts of Leningrad Oblast and Kurortny District of Saint Petersburg, Russia. The length of the Sestra is , and the area of its basin is . The Sestra flows over the Karelian ...

. They contain arrow tips and scrapers made of

quartz Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical form ...

, numerous food utensils and traces of fire camps – all indicative of hunting rather than agricultural or

animal husbandry Animal husbandry is the branch of agriculture concerned with animals that are raised for meat, fibre, milk, or other products. It includes day-to-day care, selective breeding, and the raising of livestock. Husbandry has a long history, starti ...

activities. Nicholas Roerich, Guests from Overseas

The gulf coast was later populated by

Finnic peoples The Finnic or Fennic peoples, sometimes simply called Finns, are the nations who speak languages traditionally classified in the Finnic (now commonly '' Finno-Permic'') language family, and which are thought to have originated in the region of ...

Eesti Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe, Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the Baltic Sea, sea across from Sweden, to ...

(or Chud) inhabited the region of the modern Estonia, Votes were living on the south of the gulf and

Izhorians The Izhorians (russian: Ижо́ра; ижо́рцы; fi, inkerikot; et, isurid; sg. ''ižoralain'', ''inkeroin'', ''ižora'', ''ingermans'', ''ingers'', ''ingrian'', pl. ''ižoralaizet''), along with the Votes, are a Finnic indigenous peopl ...

to the south of Neva River.

Korela Korela Fortress (Russian: Корела, Finnish: ''Käkisalmen linna'', Swedish: ''Kexholms slott''), at the town of Priozersk, Leningrad Oblast, Russia. Origin The original fortification was built by Karelians but the castle seen today is from ...

tribes settled to the west of Lake Ladoga. Great Russian Encyclopedia. "Russia". 2004 In the 8th and 9th centuries, the banks of Neva and of the Gulf of Finland was populated by

East Slavs The East Slavs are the most populous subgroup of the Slavs. They speak the East Slavic languages, and formed the majority of the population of the medieval state Kievan Rus', which they claim as their cultural ancestor.John Channon & Robert H ...

, in particular by

Ilmen Slavs The Novgorod Slavs, Ilmen Slavs (russian: Ильменские слове́не, ''Il'menskiye slovene''), or Slovenes (not to be confused with the Slovenian Slovenes) were the northernmost tribe of the Early Slavs, and inhabited the shores of L ...

and

Krivichs The Krivichs (Kryvichs) ( be, крывічы, kryvičý, ; rus, кри́вичи, p='krʲivʲɪtɕɪ, kríviči) were a tribal union of Early East Slavs The early Slavs were a diverse group of tribal societies who lived during the Migration P ...

. They were engaged in

slash-and-burn Slash-and-burn agriculture is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed veget ...

agriculture, animal husbandry, hunting and fishing. From the 8th to the 13th century, the Gulf of Finland and Neva were parts of the waterway from

Scandinavia Scandinavia; Sámi languages: /. ( ) is a subregion#Europe, subregion in Northern Europe, with strong historical, cultural, and linguistic ties between its constituent peoples. In English usage, ''Scandinavia'' most commonly refers to Denmark, ...

, through

Eastern Europe Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural, and socio-economic connotations. The vast majority of the region is covered by Russ ...

to the

Byzantine Empire The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...

. From the 9th century, the eastern coast of the gulf belonged to

Veliky Novgorod Veliky Novgorod ( rus, links=no, Великий Новгород, t=Great Newtown, p=vʲɪˈlʲikʲɪj ˈnovɡərət), also known as just Novgorod (), is the largest city and administrative centre of Novgorod Oblast, Russia. It is one of the ...

and were called Vodskaya Pyatina. As a result of the 1219 crusade and the Battle of Lindanise, the Northern Estonia became part of Denmark (

Danish Estonia Danish may refer to: * Something of, from, or related to the country of Denmark People * A national or citizen of Denmark, also called a "Dane," see Demographics of Denmark * Culture of Denmark * Danish people or Danes, people with a Danish ance ...

).Countries and Peoples: USSR. Baltic republics. Belarus. Ukraine. Moldova. – Moscow: Mysl, 1984. In the 12th century, the city Reval ( la, Revalia, russian: Колыва́нь) was established on the territory of modern Tallinn.A. F. Treshniko
Encyclopedic Dictionary of Geography: Geographical names
– Moscow: Soviet Encyclopedia, 1983. As a result of the Estonian uprising in 1343, the Northern Estonia was taken over by the

Teutonic Order The Order of Brothers of the German House of Saint Mary in Jerusalem, commonly known as the Teutonic Order, is a Catholic religious institution founded as a military society in Acre, Kingdom of Jerusalem. It was formed to aid Christians on ...

and sold by Denmark in 1346. In 1559, during the

Livonian War The Livonian War (1558–1583) was the Russian invasion of Old Livonia, and the prolonged series of military conflicts that followed, in which Tsar Ivan the Terrible of Russia (Muscovy) unsuccessfully fought for control of the region (pre ...

, the Bishop of Ösel-Wiek in

Old Livonia Terra Mariana (Medieval Latin for "Land of Mary") was the official name for Medieval Livonia or Old Livonia ( nds, Oolt-Livland, liv, Jemā-Līvõmō, et, Vana-Liivimaa, lv, Livonija). It was formed in the aftermath of the Livonian Crusade, a ...

sold his lands to King Frederick II of Denmark for 30,000

thalers A thaler (; also taler, from german: Taler) is one of the large silver coins minted in the states and territories of the Holy Roman Empire and the Habsburg monarchy during the Early Modern period. A ''thaler'' size silver coin has a diameter of ...

. The Danish king gave the territory to his younger brother Magnus who landed on

Saaremaa Saaremaa is the largest island in Estonia, measuring . The main island of Saare County, it is located in the Baltic Sea, south of Hiiumaa island and west of Muhu island, and belongs to the West Estonian Archipelago. The capital of the island i ...

with an army in 1560. The whole of

became a Danish possession in 1573, and remained so until it was transferred to Sweden in 1645. In the 12th and 13th centuries, the Finnish tribes on the north of the gulf were conquered by the Swedes who then proceeded to the Slavs. The first encounter is attributed to 1142 when 60 Swedish ships attacked 3 Russian merchant vessels. After a Swedish attack in 1256, the Russian army of

Alexander Nevsky Alexander Yaroslavich Nevsky (russian: Александр Ярославич Невский; ; 13 May 1221 – 14 November 1263) served as Prince of Novgorod (1236–40, 1241–56 and 1258–1259), Grand Prince of Kiev (1236–52) and Grand P ...

crossed the frozen gulf and raided the Swedish territories in the modern Finland. In 1293, the

Vyborg Castle Vyborg Castle (russian: Выборгский замок, fi, Viipurin linna, sv, Viborgs slott) is a Swedish-built medieval fortress around which the town of Vyborg (today in Russia) evolved. The castle became the stronghold of the Swedish real ...

and city of

was founded by the Swedish

marshal Marshal is a term used in several official titles in various branches of society. As marshals became trusted members of the courts of Medieval Europe, the title grew in reputation. During the last few centuries, it has been used for elevated o ...

Torkel Knutsson Torkel (Tyrgils or Torgils) Knutsson (d. 1306) was Lord High Constable of Sweden, member of the Privy Council of Sweden (''Riksråd''), and virtual ruler of Sweden during the early reign of King Birger Magnusson (1280–1321). Biography To ...

. The castle was fought over for decades between Sweden and the

Novgorod Republic The Novgorod Republic was a medieval state that existed from the 12th to 15th centuries, stretching from the Gulf of Finland in the west to the northern Ural Mountains in the east, including the city of Novgorod and the Lake Ladoga regions of m ...

. By the

Treaty of Nöteborg The Treaty of Nöteborg, also known as the ''Treaty of Oreshek'' ( sv, Freden i Nöteborg, Russian: ''Ореховский мир,'' fi, Pähkinäsaaren rauha), is a conventional name for the peace treaty signed at Oreshek ( sv, Nöteborg, fi, ...

in 1323, Vyborg was finally recognized as a part of

Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...

. It withstood a prolonged siege by Daniil Shchenya during the Russo-Swedish War of 1496–1499. The town's trade privileges were chartered by King

Eric of Pomerania Eric of Pomerania (1381 or 1382 – 24 September 1459) was the ruler of the Kalmar Union from 1396 until 1439, succeeding his grandaunt, Queen Margaret I. He is known as Eric III as King of Norway (1389–1442), Eric VII as King of Denmark (1 ...

in 1403. Vyborg remained in Swedish hands until its capture by

Peter the Great Peter I ( – ), most commonly known as Peter the Great,) or Pyotr Alekséyevich ( rus, Пётр Алексе́евич, p=ˈpʲɵtr ɐlʲɪˈksʲejɪvʲɪtɕ, , group=pron was a Russian monarch who ruled the Tsardom of Russia from t ...

in the

(1710).V. A. Ezho
''Leningrad Oblast: a historical sketch''
Lenizdat, 1986 (in Russian) In 1323, the

set the border between Sweden and Russia along the river Sestra. In the 15th century, the Izhorian lands of the Novgorod Republic were attached to the

Grand Duchy of Moscow The Grand Duchy of Moscow, Muscovite Russia, Muscovite Rus' or Grand Principality of Moscow (russian: Великое княжество Московское, Velikoye knyazhestvo Moskovskoye; also known in English simply as Muscovy from the Lati ...

. In 1550,

Gustav I of Sweden Gustav I, born Gustav Eriksson of the Vasa noble family and later known as Gustav Vasa (12 May 1496 – 29 September 1560), was King of Sweden from 1523 until his death in 1560, previously self-recognised Protector of the Realm ('' Riksför ...

founded a city on the site of modern

. As a result of the Russian defeat in the

Ingrian War The Ingrian War ( sv, Ingermanländska kriget) between the Swedish Empire and the Tsardom of Russia lasted between 1610 and 1617. It can be seen as part of Russia's Time of Troubles and is mainly remembered for the attempt to put a Swedish duke ...

(1610–1617) and the

Treaty of Stolbovo The Treaty of Stolbovo () was a peace treaty that ended the Ingrian War (), which had been fought between the Swedish Empire and the Russian Tsardom between 1610 and 1617. History After nearly two months of negotiations, representatives from Sw ...

(1617) the lands on the Gulf of Finland and Neva River became part of the

Swedish Ingria Swedish Ingria ( sv, Svenska Ingermanland, ‘land of Ingrians’) was a dominion of the Swedish Empire from 1583 to 1595 and then again from 1617 to 1721, when it was ceded to the Russian Empire in the Treaty of Nystad. History Ingria was ceded ...

. Its capital Nyen was located in the delta of Neva River.

History since 1700

Russia reclaimed the eastern part of the gulf as a result of the victory in the

(1700–1721). On 16 May 1703, Saint Petersburg was founded in the mouth of Neva River, not far from Nyen, and in 1712 it became Russia's capital. To protect the city from the Swedish fleet, the Kronshlot fortress was built on an artificial island near the Kotlin Island in May 1704. By 1705, five more such forts were built nearby composing the city

. These fortifications, nicknamed by the contemporaries "the Russian

Dardanelles The Dardanelles (; tr, Çanakkale Boğazı, lit=Strait of Çanakkale, el, Δαρδανέλλια, translit=Dardanéllia), also known as the Strait of Gallipoli from the Gallipoli peninsula or from Classical Antiquity as the Hellespont (; ...

", were designed to control the Gulf waterway. In 1710, the cities of Peterhof and Oranienbaum were founded on the southern shore of the Gulf of Finland. On 27 July 1714, near the

, the Russian Navy won the

Battle of Gangut The Battle of Gangut (russian: Гангутское сражение, fi, Riilahden taistelu, Finland Swedish: ''Slaget vid Rilax'', sv, Sjöslaget vid Hangöudd) took place on 27 July Jul./ 7 August 1714 Greg. during the Great Northern War ...

– a decisive victory over the Imperial Swedish Navy. The Russo-Swedish war ended in 1721 by the

Treaty of Nystad The Treaty of Nystad (russian: Ништадтский мир; fi, Uudenkaupungin rauha; sv, Freden i Nystad; et, Uusikaupunki rahu) was the last peace treaty of the Great Northern War of 1700–1721. It was concluded between the Tsardom of ...

, by which Russia received all the lands along the Neva and the Gulf of Finland, as well as Estland, Swedish Livonia and western part of the

Karelian Isthmus The Karelian Isthmus (russian: Карельский перешеек, Karelsky peresheyek; fi, Karjalankannas; sv, Karelska näset) is the approximately stretch of land, situated between the Gulf of Finland and Lake Ladoga in northwestern ...

, including Vyborg. However, Finland was returned to Sweden.Lurie, F.M. ''Russian and world history in the tables: Synchronic table.'' – SPb.: Caravelle, 1995. The

war War is an intense armed conflict between states, governments, societies, or paramilitary groups such as mercenaries, insurgents, and militias. It is generally characterized by extreme violence, destruction, and mortality, using regular o ...

resumed in (1788–1790), and the

Battle of Hogland The naval Battle of Hogland took place on 17 July (6 July OS) 1788 during the Russo-Swedish War (1788-1790). Origins On the outbreak of war with Russia in 1788, Sweden planned to attack the Russian capital St. Petersburg. One Swedish army wa ...

occurred on 6 July 1788 near the island

. Both the battle and the war were relatively minor and indecisive, with the outcome of Russia retaining its territories. The next

Russo-Swedish war Wars between Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and ...

was fought in (1808–1809). It ended with the

Treaty of Fredrikshamn The Treaty of Fredrikshamn ( sv, Freden i Fredrikshamn; russian: Фридрихсгамский мирный договор), or the Treaty of Hamina ( fi, Haminan rauha), was a peace treaty concluded between Sweden and Imperial Russia on 17 ...

giving the Russia rights on the territory of Finland and

Åland Åland ( fi, Ahvenanmaa: ; ; ) is an Federacy, autonomous and Demilitarized zone, demilitarised region of Finland since 1920 by a decision of the League of Nations. It is the smallest region of Finland by area and population, with a size of 1 ...

. The newly established in 1809

Grand Duchy of Finland The Grand Duchy of Finland ( fi, Suomen suuriruhtinaskunta; sv, Storfurstendömet Finland; russian: Великое княжество Финляндское, , all of which literally translate as Grand Principality of Finland) was the predecessor ...

received broad autonomy within the Russian Empire and Western Karelia was returned to Finland. On 6 December 1917, the

Parliament of Finland The Parliament of Finland ( ; ) is the unicameral and supreme legislature of Finland, founded on 9 May 1906. In accordance with the Constitution of Finland, sovereignty belongs to the people, and that power is vested in the Parliament. The ...

promulgated the Finnish Declaration of Independence. Western Karelia was annexed by the Soviet Union after the

Winter War The Winter War,, sv, Vinterkriget, rus, Зи́мняя война́, r=Zimnyaya voyna. The names Soviet–Finnish War 1939–1940 (russian: link=no, Сове́тско-финская война́ 1939–1940) and Soviet–Finland War 1 ...

. Estonia declared independence on 24 February 1918 and fought a

war of independence This is a list of wars of independence (also called liberation wars). These wars may or may not have been successful in achieving a goal of independence. List See also * Lists of active separatist movements * List of civil wars * List o ...

. The republic existed until 1940 and then was annexed by the Soviet Union. Estonia regained its independence after the

dissolution of the Soviet Union The dissolution of the Soviet Union, also negatively connoted as rus, Разва́л Сове́тского Сою́за, r=Razvál Sovétskogo Soyúza, ''Ruining of the Soviet Union''. was the process of internal disintegration within the Sov ...

in 1991. In March 1921, the

Kronstadt rebellion The Kronstadt rebellion ( rus, Кронштадтское восстание, Kronshtadtskoye vosstaniye) was a 1921 insurrection of Soviet sailors and civilians against the Bolshevik government in the Russian SFSR port city of Kronstadt. Loc ...

by sailors was put down by the Red Army. The Gulf of Finland had several major naval operations during World War II. In August 1941, during the evacuation of the Baltic Fleet from Tallinn to Kronstadt, German forces sank 15 Russian military vessels, (5

destroyer In naval terminology, a destroyer is a fast, manoeuvrable, long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against powerful short range attackers. They were originally developed in ...

s, 2

submarine A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...

s, 3

guard ship A guard ship is a warship assigned as a stationary guard in a port or harbour, as opposed to a coastal patrol boat, which serves its protective role at sea. Royal Navy In the Royal Navy of the eighteenth century, peacetime guard ships were usual ...

s, 2

minesweeper A minesweeper is a small warship designed to remove or detonate naval mines. Using various mechanisms intended to counter the threat posed by naval mines, minesweepers keep waterways clear for safe shipping. History The earliest known usage of ...

s, 2

gunboat A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies. History Pre-ste ...

s and 1 Motor Torpedo Boat) as well as 43 transport and support ships. Several ships still remain on the gulf bottom near Cape Juminda, and a monument was raised there in memory of those lost in the events. In 1978, construction was started on the

Saint Petersburg Dam The Saint Petersburg Flood Prevention Facility Complex ( rus, Ко́мплекс защи́тных сооруже́ний Санкт-Петербу́рга от наводне́ний, kómpleks zashchítnykh sooruzhéniy Sankt-Peterbúrga ot ...

aiming to protect Saint Petersburg from the frequent floods. The work was halted at 60% completion in the late 1980s, due to the financial problems related to the breakup of the Soviet Union; it was resumed in 2001 and is – as of August 2011 – complete.Dam. A Complex of protection measures of Saint Petersburg against Flood
Spb-projects.ru. Retrieved on 2011-08-14.

Economy

The southern coast of the gulf contains the

Leningrad Nuclear Power Plant Leningrad Nuclear Power Plant (russian: Ленинградская атомная электростанция; Ленинградская АЭС ''Leningradskaya atomnaya elektrostantsiya; Leningradskaya AES'' ()) is a nuclear power plant loca ...

and a network of ports and unique natural and historical places. Navigation has long been the dominant activity in the gulf. The major port cities and their functions are, in Russia:

(all kinds of goods),

(container shipping), Lomonosov (general cargo, containers, metals),

(general cargo), Primorsk (oil and petroleum products),

(oil and coal),

Ust-Luga Ust-Luga (russian: Усть-Луга, lit. ''mouth of the Luga'', Votian: ''Laugasuu'', lit. ''mouth of the Luga'', fi, Laukaansuu) is a settlement and railway station in Kingiseppsky District of Leningrad Oblast, Russia, near the Estonian border ...

(

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 ...

, coal, timber, containers); in Finland:

(containers),

Kotka Kotka (; ; la, Aquilopolis) is a city in the southern part of the Kymenlaakso province on the Gulf of Finland. Kotka is a major port and industrial city and also a diverse school and cultural city, which was formerly part of the old Kymi parish ...

(containers, timber, agricultural products; it is the main transhipment cargo port for Russia),

Hanko Hanko may refer to People *August Hanko (military personnel), August Hanko, German First World War flying ace Places *Hanko, Finland, town and municipality *Hanko Peninsula, Finland *Hankø, an island in the Oslo Fjord in Norway *The asteroid ...

(containers, vehicles),

Turku Turku ( ; ; sv, Åbo, ) is a city and former capital on the southwest coast of Finland at the mouth of the Aura River, in the region of Finland Proper (''Varsinais-Suomi'') and the former Turku and Pori Province (''Turun ja Porin lääni''; ...

(containers, rail ferry), Kilpilahti/Sköldvik harbour (

oil refinery An oil refinery or petroleum refinery is an industrial process plant where petroleum (crude oil) is transformed and refined into useful products such as gasoline (petrol), diesel fuel, asphalt base, fuel oils, heating oil, kerosene, lique ...

); in Estonia:

(grains, refrigerators, oil),

Paldiski Paldiski is a town and Baltic Sea port situated on the Pakri Peninsula of northwestern Estonia. Since 2017, it's the administrative centre of Lääne-Harju Parish of Harju County. Previously a village of Estonia-Swedes known by the historical ...

Sillamäe Sillamäe (Estonian for 'Bridge Hill'; also known by the Germanised names of ''Sillamäggi'' or ''Sillamägi'') is a town in Ida-Viru County in the northern part of Estonia, on the southern coast of the Gulf of Finland. It has a population of ...

. Gulf of Finland is also part of the

Volga–Baltic Waterway The Volga–Baltic Waterway (Volgobalt, Волгобалт), formerly known as the Mariinsk Canal System (Russian: Мариинская водная система), is a series of canals and rivers in Russia which link the Volga with the Balti ...

and

White Sea–Baltic Canal The White Sea–Baltic Canal (russian: Беломо́рско-Балти́йский кана́л, , ), often abbreviated to White Sea Canal () is a ship canal in Russia opened on 2 August 1933. It connects the White Sea, in the Arctic Ocean, with ...

. Important goods include

apatite Apatite is a group of phosphate minerals, usually hydroxyapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ions, respectively, in the crystal. The formula of the admixture of the three most common e ...

from the

Kola Peninsula sjd, Куэлнэгк нёа̄ррк , image_name= Kola peninsula.png , image_caption= Kola Peninsula as a part of Murmansk Oblast , image_size= 300px , image_alt= , map_image= Murmansk in Russia.svg , map_caption = Location of Murmansk Oblas ...

, Karelian

granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies under ...

and greenstone,

timber Lumber is wood that has been processed into dimensional lumber, including beams and planks or boards, a stage in the process of wood production. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, wi ...

from

Arkhangelsk Oblast Arkhangelsk Oblast (russian: Арха́нгельская о́бласть, ''Arkhangelskaya oblast'') is a federal subjects of Russia, federal subject of Russia (an oblast). It includes the Arctic Ocean, Arctic archipelagos of Franz Josef Land ...

and

Vologda Vologda ( rus, Вологда, p=ˈvoləɡdə) is a city and the administrative center of Vologda Oblast, Russia, located on the river Vologda within the watershed of the Northern Dvina. Population: The city serves as a major transport hu ...

ferrous metals In chemistry, the adjective Ferrous indicates a compound that contains iron(II), meaning iron in its +2 oxidation state, possibly as the divalent cation Fe2+. It is opposed to "ferric" or iron(III), meaning iron in its +3 oxidation state, such a ...

from Cherepovets, coal from Donbas and the

Kuznetsk Basin The Kuznetsk Basin (russian: Кузнецкий угольный бассейн, Кузбасс; often abbreviated as Kuzbass or Kuzbas) in southwestern Siberia, Russia, is one of the largest coal mining areas in Russia, covering an area of aroun ...

pyrite The mineral pyrite (), or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Iron, FeSulfur, S2 (iron (II) disulfide). Pyrite is the most abundant sulfide mineral. Pyrite's metallic Luster (mineralogy), lust ...

from Ural, potassium chloride from

Solikamsk Solikamsk (russian: Солика́мск, Permyak: Совкар, ''Sovkar'', also Соликамскӧй, ''Sovkamsköy'') is a town in Perm Krai, Russia. Modern Solikamsk is the third-largest town in the krai, with a population of History The ...

from

Volga The Volga (; russian: Во́лга, a=Ru-Волга.ogg, p=ˈvoɫɡə) is the List of rivers of Europe#Rivers of Europe by length, longest river in Europe. Situated in Russia, it flows through Central Russia to Southern Russia and into the Cas ...

region, and grains from many regions of Russia.Russian river fleet and tourism, INFOFLOT.RU
. Map.infoflot.ru. Retrieved on 2011-08-14. Passenger transport on the gulf includes a number of ferry lines which connect the following ports: Helsinki and Hanko (Finland), Mariehamn (

Stockholm Stockholm () is the Capital city, capital and List of urban areas in Sweden by population, largest city of Sweden as well as the List of urban areas in the Nordic countries, largest urban area in Scandinavia. Approximately 980,000 people liv ...

and

Kapellskär Kapellskär () is a port about north of Stockholm, in Sweden. It is located by the Baltic Sea, in Norrtälje Municipality, Stockholm County. Services The port is served by frequent passenger ferry services to Mariehamn, Åland, Finland, operated ...

(Sweden), Tallinn and Paldiski (Estonia),

Rostock Rostock (), officially the Hanseatic and University City of Rostock (german: link=no, Hanse- und Universitätsstadt Rostock), is the largest city in the German state of Mecklenburg-Vorpommern and lies in the Mecklenburgian part of the state, c ...

(Germany), Saint Petersburg and

Kaliningrad Kaliningrad ( ; rus, Калининград, p=kəlʲɪnʲɪnˈɡrat, links=y), until 1946 known as Königsberg (; rus, Кёнигсберг, Kyonigsberg, ˈkʲɵnʲɪɡzbɛrk; rus, Короле́вец, Korolevets), is the largest city and ...

(Russia), as well as many other cities. Another major and historical activity in the gulf is fishing, especially on the northern coast near Vyborg, Primorsk and on the southern coast near Ust-Luga. Commercial fish species are herring,

sprats ''Sprattus'' is a genus of small oily fish of the family Clupeidae. They are more usually known by their common name, sprats. There are five species in the genus. Species * '' Sprattus antipodum'' (Hector, 1872) (New Zealand blueback sprat) ...

, whitefishes,

carp bream The common bream, freshwater bream, bream, bronze bream, carp bream or sweaty bream (''Abramis brama''), is a European species of freshwater fish in the family Cyprinidae. It is now considered to be the only species in the genus ''Abramis''. ...

, roaches,

, European eel,

and others. In 2005, the catchment was 2000 tons by the ships of Saint Petersburg and Leningrad Oblast alone. In September 2005 the agreement was signed on the construction of the

Nord Stream 1 Nord Stream (German-English mixed expression; german: Nord and en, Stream, literally 'North Stream'; russian: Северный поток, ''Severny potok'') is a pair of offshore natural gas pipelines in Europe that run under the Baltic Sea ...

offshore gas pipeline on the Baltic Sea, from Vyborg to the German city of

Greifswald Greifswald (), officially the University and Hanseatic City of Greifswald (german: Universitäts- und Hansestadt Greifswald, Low German: ''Griepswoold'') is the fourth-largest city in the German state of Mecklenburg-Western Pomerania after Rosto ...

. The first line was expected become operational in 2011.Nord Stream
. Nord Stream. Retrieved on 2011-08-14. Afterwards, the first line of Nord Stream was laid by May 2011 and was inaugurated on 8 November 2011; the second line was inaugurated on 8 October 2012, and was completed in September 2021, but has not entered service yet, as its approval got halted in February 2022.

Archaeology

The bottom of the gulf is one of the world's largest ship cemeteries. Because of the low

salinity Salinity () is the saltiness or amount of salt dissolved in a body of water, called saline water (see also soil salinity). It is usually measured in g/L or g/kg (grams of salt per liter/kilogram of water; the latter is dimensionless and equal ...

and cold waters, and no

shipworm The shipworms are marine bivalve molluscs in the family Teredinidae: a group of saltwater clams with long, soft, naked bodies. They are notorious for boring into (and commonly eventually destroying) wood that is immersed in sea water, including ...

s, the ships are relatively well preserved. Since the 6th century, major waterways were running through the gulf, and from the 8th to the 10th century, about 3,000 tonnes of

silver Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, whi ...

was transported there. Later, the gulf was actively used by Sweden and Russia for transport of goods. Every year saw dozens of lost ships. In the fall of 1743, 17 Russian warships returning from Finland sank in just 7 hours, and in the summer of 1747, 26 merchant vessels sank within 4 hours near Narva. A record was set in 1721 when during the evacuation of Russian troops from Finland, more than 100 vessels were lost within 3 months, including 64 in a single night. By the end of 1996, about 5,000 submerged objects were identified in the Russian part of the gulf, including 2,500 ships, 1,500 airplanes, and small items such as boats,

anchor An anchor is a device, normally made of metal , used to secure a vessel to the bed of a body of water to prevent the craft from drifting due to wind or current. The word derives from Latin ''ancora'', which itself comes from the Greek ἄγ ...

s, tanks, tractors, cars, cannons, and even

naval mine A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any ...

s, aerial bombs, torpedoes, and other ammunition. The ships belonged to Russia (25%), Germany (19%), United Kingdom (17%), Sweden (15%), Netherlands (8%), and Finland (7%). The remaining 9% are from Norway, Denmark, France, United States, Italy, Estonia, and Latvia. These objects present potential hazards to navigation, fishery, coastal construction, laying of submarine pipelines and cables, and the environment. Mines were laid in the gulf during

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

(38,932 units), the

Russian Civil War , date = October Revolution, 7 November 1917 – Yakut revolt, 16 June 1923{{Efn, The main phase ended on 25 October 1922. Revolt against the Bolsheviks continued Basmachi movement, in Central Asia and Tungus Republic, the Far East th ...

, and the

(1939–1940), with an estimated total number of 60,000; 85,000 more mines were set during World War II, and only a fraction of all those were eliminated after the wars.

Pollution

The ecological condition of the Gulf of Finland, Neva Bay and Neva River is unsatisfactory. There is significant contamination by ions of mercury and

copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...

, organochlorine

pesticide Pesticides are substances that are meant to control pests. This includes herbicide, insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, microbicide, fungicide, and lampri ...

phenols In organic chemistry, phenols, sometimes called phenolics, are a class of chemical compounds consisting of one or more hydroxyl groups (— O H) bonded directly to an aromatic hydrocarbon group. The simplest is phenol, . Phenolic compounds are ...

, petroleum products and

polycyclic aromatic hydrocarbon A polycyclic aromatic hydrocarbon (PAH) is a class of organic compounds that is composed of multiple aromatic rings. The simplest representative is naphthalene, having two aromatic rings and the three-ring compounds anthracene and phenanthrene. ...

s. Cleaning of waste water in Saint Petersburg was started in 1979 and by 1997 about 74% of wastewater was purified. This number rose to 85% in 2005, to 91.7% by 2008, and as of 2009 was expected to reach 100% by 2011 with the completion of the expansion of the main sewerage plant. Nevertheless, in 2008, the Federal Service of Saint Petersburg announced that no beach of Saint Petersburg is fit for swimming. Fish catchment decreased 10 times between 1989 and 2005. Apart from pollution, another reason for that is hydraulic and engineering works. For example, construction of new ports in Ust-Luga and Vysotsk and on

Vasilyevsky Island Vasilyevsky Island (russian: Васи́льевский о́стров, Vasilyevsky Ostrov, V.O.) is an island in St. Petersburg, Russia, bordered by the Bolshaya Neva and Malaya Neva Rivers (in the delta of the Neva River) in the south a ...

adversely affected the

spawning Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, ''to spawn'' refers to the process of releasing the eggs and sperm, and the act of both sexes is called spawning. Most aquatic animals, except for aquat ...

of fish.

Extraction of sand Sand mining is the extraction of sand, mainly through an open pit (or sand pit) but sometimes mined from beaches and inland dunes or dredged from ocean and river beds. Sand is often used in manufacturing, for example as an abrasive or in concr ...

and gravel in the Neva Bay for the land reclamation destroy spawning sites of

.Construction of ports in the Gulf of destroying fish
. News.spbland.ru. Retrieved on 2011-08-14. Construction of the

reduced water exchange of the Neva Bay with the eastern part of the gulf by 10–20% that increased the contamination level of Neva Bay. The largest changes occur within from the dam. Some shallow areas between Saint Petersburg and the dam are turning into swamps. Waterlogging and the associated rotting of plants may eventually lead to

eutrophication Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus. It has also been defined as "nutrient-induced increase in phytopla ...

of the area.Databases of the gulf ecology and their structure
. None. Retrieved on 2011-08-14. Also worrying is expansion of oil ports in the gulf and the construction of a treatment center for spent fuel from the

. The port of

is currently serving as a transit point for the import in Russia of

radioactive waste Radioactive waste is a type of hazardous waste that contains radioactive material. Radioactive waste is a result of many activities, including nuclear medicine, nuclear research, nuclear power generation, rare-earth mining, and nuclear weapons r ...

through the Baltic Sea. The waste, mostly depleted uranium hexafluoride, is further transported through Saint Petersburg to

Novouralsk Novouralsk (russian: Новоура́льск, lit. ''new town in the Urals'') is a closed town in Sverdlovsk Oblast, Russia, located on the eastern side of the Ural Mountains, about north of Yekaterinburg, the administrative center of the obla ...

Angarsk Angarsk ( rus, Ангарск, p=ɐnˈgarsk) is a city and the administrative center of Angarsky District of Irkutsk Oblast, Russia, located on the Kitoy River, from Irkutsk, the administrative center of the oblast. Population: History It wa ...

and other cities of eastern Russia. This transit point will be moved from Saint Petersburg to the port

, which is about west of Saint Petersburg, and within the

Border Security Zone of Russia A Border Security Zone in Russia is the designation of a strip of land (usually, though not always, along a Russian external border) where economic activity and access are restricted in line with the Frontier Regime Regulations set by the Federal S ...

, as decided by the Russian government in 2003 (Order No. 1491-r of 14 October 2003). It is expected that after this completes it should reduce the ecological risks for Saint Petersburg. Ust-Luga is envisioned to be the largest transportation and logistics hub in northwestern Russia. However, in 2015 it was reported that some construction plans in Ust-Luga were frozen, and the construction of Ust-Luga Multimodal Complex, supposed to be the transit point for radioactive waste, never started.

Major cities

Espoo Espoo (, ; sv, Esbo) is a city and municipality in the region of Uusimaa in the Republic of Finland. It is located on the northern shore of the Gulf of Finland, bordering the cities of Helsinki, Vantaa, Kirkkonummi, Vihti and Nurmijärvi ...

Hamina Hamina (; sv, Fredrikshamn, , Sweden ) is a List of cities in Finland, town and a Municipalities of Finland, municipality of Finland. It is located approximately east of the country's capital Helsinki, in the Kymenlaakso Regions of Finland, reg ...

Kirkkonummi Kirkkonummi (; sv, Kyrkslätt, , Sweden ) is a Municipalities of Finland, municipality of inhabitants () in southern Finland. The literal meaning of the words "''Kirkkonummi''" and "''Kyrkslätt''" in English language, English is "church heath". ...

* Kunda *

Loksa Loksa is a town and municipality in Harju County, Estonia, most known for its shipping industry. The town is situated on the estuary of the Valgejõgi river, which drains into Hara Bay, Gulf of Finland. As of April 1, 2022, the town had a po ...

Lomonosov Mikhail Vasilyevich Lomonosov (; russian: Михаил (Михайло) Васильевич Ломоносов, p=mʲɪxɐˈil vɐˈsʲilʲjɪvʲɪtɕ , a=Ru-Mikhail Vasilyevich Lomonosov.ogg; – ) was a Russian Empire, Russian polymath, s ...

* Loviisa *

Maardu Maardu (german: Maart) is a town and a municipality in Harju County, Estonia. It is part of Tallinn metropolitan area. The town covers an area of 22.76 km² and has a population of 16,170 (as of 1 January 2021). The Port of Muuga, ...

* Peterhof *

* Primorsk *

Sestroretsk Sestroretsk (russian: Сестроре́цк; fi, Siestarjoki; sv, Systerbäck) is a municipal town in Kurortny District of the federal city of St. Petersburg, Russia, located on the shores of the Gulf of Finland, the Sestra River ...

* Sosnovy Bor *

Zelenogorsk Zelenogorsk (russian: Зеленогорск) is the name of several inhabited localities in Russia. ;Urban localities *Zelenogorsk, Krasnoyarsk Krai, a closed town in Krasnoyarsk Krai *Zelenogorsk, Saint Petersburg, a municipal town in Kurortny ...

References

External links

ESA satellite photograph of the Gulf of Finland
* * {{DEFAULTSORT:Gulf of Finland Finland, Gulf of Gulfs of the Atlantic Ocean Gulfs of Russia Gulfs of Finland Bodies of water of Estonia Estonia–Russia border Finland–Russia border Karelian Isthmus Geography of Northern Europe Geography of Eastern Europe Bodies of water of Saint Petersburg Bodies of water of Leningrad Oblast Ramsar sites in Russia