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Rhode Island Sound
Rhode Island Sound is a strait of water off the coast of the U.S. state of Rhode Island at the mouth of Narragansett Bay. It forms the eastern extension of Block Island Sound and opens out the Atlantic Ocean between Block Island and Martha's Vineyard. Geography Geographically, Rhode Island Sound is the eastward extension of Block Island Sound. Northeast of Rhode Island Sound is Buzzards Bay. The Rhode Island Sound is approximately and has a maximum depth of . Average wave heights range from . Circulation and current strength are mostly impacted by the surrounding geology and not by wind strength. This causes the sea floor habitats in the Rhode Island Sound to be constantly changing. Sedimentary processes Studies conducted in 2006 by the Coastal Marine and Geology Program and the Long Island Sound Resource Center used digital terrain models to make topographical depictions of unknown glacial features and bedforms. Newfound glacial features include an ice-sculptured bedrock sur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fishers Island
Fishers Island (Pequot: ''Munnawtawkit'') is an island that is part of Southold, New York, United States at the eastern end of Long Island Sound, off the southeastern coast of Connecticut across Fishers Island Sound. About long and wide, it is about from the tip of Long Island at Orient Point, each from Napatree Point at the southwestern tip of Rhode Island and Groton Long Point in Connecticut, and about southeast of New London, Connecticut. It is accessible from New London by plane and regular ferry service. The island is part of the town of Southold in Suffolk County. It is a census-designated place (CDP). As of the 2010 census, there were 236 people living year-round on of land. The population rises to about 2,000 during peak summer weekends, as throngs disembark on the island from Connecticut. Geography According to the United States Census Bureau, the CDP has a total area of , of which is land and , or 3.48%, is water. Fishers Island represents a section of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intracoastal Waterway
The Intracoastal Waterway (ICW) is a inland waterway along the Atlantic and Gulf of Mexico coasts of the United States, running from Massachusetts southward along the Atlantic Seaboard and around the southern tip of Florida, then following the Gulf Coast to Brownsville, Texas. Some sections of the waterway consist of natural inlets, saltwater rivers, bays, and sounds, while others are artificial canals. It provides a navigable route along its length without many of the hazards of travel on the open sea. Context and early history Since the coastline represented the national border, and commerce of the time was chiefly by water, the fledgling United States government established a degree of national control over it. Inland transportation to supply the coasting trade at the time was less known and virtually undeveloped, but when new lands and their favorable river systems were added with the Northwest Territory in 1787, the Northwest Ordinance established a radically new and f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Straits Of Rhode Island
A strait is an oceanic landform connecting two seas or two other large areas of water. The surface water generally flows at the same elevation on both sides and through the strait in either direction. Most commonly, it is a narrow ocean channel that lies between two land masses. Some straits are not navigable, for example because they are either too narrow or too shallow, or because of an unnavigable reef or archipelago. Straits are also known to be loci for sediment accumulation. Usually, sand-size deposits occur on both the two opposite strait exits, forming subaqueous fans or deltas. Terminology The terms ''channel'', ''pass'', or ''passage'' can be synonymous and used interchangeably with ''strait'', although each is sometimes differentiated with varying senses. In Scotland, ''firth'' or ''Kyle'' are also sometimes used as synonyms for strait. Many straits are economically important. Straits can be important shipping routes and wars have been fought for control of them. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lion's Mane Jellyfish
The lion's mane jellyfish (''Cyanea capillata''), also known as the giant jellyfish, arctic red jellyfish, or the hair jelly, is one of the largest known species of jellyfish. Its range is confined to cold, boreal waters of the Arctic, northern Atlantic, and northern Pacific Oceans. It is common in the English Channel, Irish Sea, North Sea, and in western Scandinavian waters south to Kattegat and Øresund. It may also drift into the southwestern part of the Baltic Sea (where it cannot breed due to the low salinity). Similar jellyfish – which may be the same species – are known to inhabit seas near Australia and New Zealand. The largest recorded specimen was measured off the coast of Massachusetts in 1865 and had a bell with a diameter of and tentacles around long. Lion's mane jellyfish have been observed below 42°N latitude for some time in the larger bays of the East Coast of the United States. The lion's mane jellyfish uses its stinging tentacles to capture, pull in, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mnemiopsis Leidyi
''Mnemiopsis leidyi'', the warty comb jelly or sea walnut, is a species of tentaculate ctenophore (comb jelly). It is native to western Atlantic coastal waters, but has become established as an invasive species in European and western Asian regions. Three species have been named in the genus ''Mnemiopsis'', but they are now believed to be different ecological forms of a single species ''M. leidyi'' by most zoologists. Description and ecology ''Mnemiopsis'' have an oval-shaped and transparent lobed body, with four rows of ciliated combs that run along the body vertically and glow blue-green when disturbed. They have several feeding tentacles. Unlike cnidarians, ''Mnemiopsis'' does not sting. Their body comprises 97% water. They have a maximum body length of roughly and a diameter of . It is euryoecious, tolerating a wide range of salinity (2 to 38 psu), temperature (), and water quality. ''Mnemiopsis'' is a carnivore that consumes zooplankton including crustaceans, other comb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Didemnum
''Didemnum'' is a genus of colonial tunicates in the family Didemnidae. It is the most speciose genus in the didemnid family. Species in this genus often have small calcareous spicules embedded in the tunic and form irregular or lobed colonies. Some ''Didemnum'' species, including '' Didemnum vexillum'' and '' Didemnum perlucidem'' are considered invasive species. In early 2006, ''Didemnum vexillum'' was found covering a 230 km2 area of cobble habitat in Georges Bank off the coast of New England, and is classified as an invasive species of greatest concern in coastal areas throughout Europe, New Zealand, and North America. ''Didemnum'' sp. invasions have also been recorded in Canada, the Mediterranean, and the Netherlands. Species in this genus can be found in tropical or temperate regions. Some tropical species such as '' Didemnum molle'' have photosynthetic algae in their tunics. Species The following species are recognised in the genus ''Didemnum'': *'' Didemnum abradat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunicate
A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata (). It is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates). The subphylum was at one time called Urochordata, and the term urochordates is still sometimes used for these animals. They are the only chordates that have lost their myomeric segmentation, with the possible exception of the 'seriation of the gill slits'. Some tunicates live as solitary individuals, but others replicate by budding and become colonies, each unit being known as a zooid. They are marine filter feeders with a water-filled, sac-like body structure and two tubular openings, known as siphons, through which they draw in and expel water. During their respiration and feeding, they take in water through the incurrent (or inhalant) siphon and expel the filtered water through the excurrent (or exhalant) siphon. Most adult tunicates are sessile, immobile and perman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laminaria Saccharina
''Saccharina latissima'' is a brown alga (class Phaeophyceae), of the family Laminariaceae. It is known by the common names sugar kelp, sea belt, and Devil's apron, and is one of the species known to Japanese cuisine as kombu. It is found in the north Atlantic Ocean, Arctic Ocean and north Pacific Ocean. It is common along the coast of Northern Europe as far south as Galicia Spain, the coast of North America north of Massachusetts and central California, and the coast of Asia south to Korea and Japan. Description ''Saccharina latissima'' is a yellowish brown colour with a long narrow, undivided blade that can grow to long and wide. The central band is dimpled while the margins are smoother with a wavy edge, this is to cause greater water movement around the blades to aid in gas exchange. The frond is attached to the rock by stout rhizoids about 5 mm in diameter in the intertidal and sublittoral zones by a claw-like holdfast and a short, pliable, cylindrical stipe. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fucoid
The Fucales (fucoids) are an order in the brown algae (class Phaeophyceae). The list of families in the Fucales, as well as additional taxonomic information on algae, is publicly accessible at Algaebaseref name="Guiry and Guiry">Guiry, M.D. and Guiry, G.M. 2006. AlgaeBase version 4.2. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 7 December 2006 The class Phaeophyceae is included within the division Heterokontophyta.Hardy, G. and Guiry, M.D. 2006. ''A Check-list and Atlas of the Seaweeds of Britain and Ireland.'' 2006. The British Phycologcal Society. This name comes from the Greek word ''phaios'' meaning "brown" and ''phyton'' meaning plant.Huisman, J.M. 2000. ''Marine Plants of Australia.'' University of Western Australia Press, Australia. They include some of the largest organisms in the sea, but some are small and fine in structure. Classification The Fucales include some of the more common littoral seaweed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratification (water)
Stratification is the separation of water in layers. Two main types of stratification of water are uniform and layered stratification. Layered stratification occurs in all ocean basins. Stratified layers act as a barrier to the mixing of water, which impacts the exchange of heat, carbon, oxygen and other nutrients. Due to upwelling and downwelling, which are both wind-driven, mixing of different layers can occur through the rise of cold nutrient-rich and warm water, respectively. Generally, layers are based on water density: heavier, and hence denser, water is below the lighter water, representing a stable stratification. For example, the pycnocline is a layer in the ocean where the change in density is relatively large compared to that of other layers in the ocean. The thickness of the thermocline is not constant everywhere and depends on a variety of variables. Between 1960 and 2018, upper ocean stratification increased between 0.7-1.2% per decade. This means that the differenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Gull Island
Great Gull Island is a island separating the Long Island and Block Island sounds, located approximately southwest of Little Gull Island. Both islands are located in the town of Southold in Suffolk County, New York, and lie roughly midway between Plum Island and Fishers Island. The island is the location of former military fortifications, but is now owned by the American Museum of Natural History which is working to restore its ecosystem. It hosts many nesting Common and Roseate terns. History A major stopover for birds following the Atlantic Flyway, Great Gull Island was the home of large colonies of nesting terns up until the end of the 19th century, when many birds were killed as a result of the millinery trade and the construction of military fortifications on the island. In 1897, Fort Michie was constructed on Great Gull Island as part of the Coast Defenses of Long Island Sound. The military base was operational from the Spanish–American War through World War II ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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