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Atlantic Jackknife Clam
The Atlantic jackknife clam, ''Ensis leei'', also known as the bamboo clam, American jackknife clam or razor clam, is a large edible marine bivalve mollusc found on the North American Atlantic coast, from Canada to South Carolina. The species was also introduced to Europe at the end of the 70's and is already extremely abundant there in suitable habitats. The name " razor clam" is also used to refer to different species such as the Pacific razor clam (''Siliqua patula)'' or Razor shell (''Ensis magnus)''. Jackknife clams live in sand and mud and are found in intertidal or subtidal zones in bays and estuaries. Its streamlined shell and strong foot allow Jackknife clams to burrow quickly in wet sand. Jackknife clams are also able to swim by propelling jets of water out of their shells. The Jackknife clam gets its name from its shell's extremely sharp rim and the overall shape bearing a strong resemblance to an old fashioned straight razor. Beachgoers can be injured when the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ring-billed Gull
The ring-billed gull (''Larus delawarensis'') is a medium-sized gull native to North America, breeding in Canada and the northern Contiguous United States, and wintering mainly in the United States and northern Mexico. The genus name is from Latin ''Larus'' which appears to have referred to a gull or other large seabird. The specific ''delawarensis'' refers to the Delaware River. Description The ring-billed gull is a medium-sized gull, having an average length of and a wingspan that ranges from . Adults weigh from . The head, neck and underparts are white; the relatively short bill is yellow with a black ring; the back and wings are silver grey with black wingtips with white 'mirrors'; and the legs are yellow. The eyes are yellow with red rims. This gull takes three years to reach its breeding plumage starting with the largely brown juvenile plumage, its appearance changing with each fall moult. The average lifespan of an individual that reaches adulthood is 10.9 years. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pharidae
Pharidae is a Taxonomy (biology), taxonomic family (biology), family of saltwater clams, marine (ocean), marine bivalve molluscs in the order Adapedonta. This family of clams is related to the Solenidae, razor shells, a family which is considered to include Pharidae by some authorities. Genera Genera within the family Pharidae include: * ''Cenonovaculina'' Morlet, 1889 * ''Afrophaxas'' Cosel, 1993 * ''Cultellus (bivalve), Cultellus'' Schumacher, 1817 * ''Ensiculus'' H. Adams, 1860 * ''Ensis'' Schumacher, 1817 * ''Leguminaria'' Schumacher, 1817 * ''Nasopharus'' Cosel, 1993 * ''Neosiliqua'' Habe, 1965 * ''Novaculina'' Benson, 1830 * ''Orbicularia (mollusc), Orbicularia'' Deshayes, 1850 * ''Pharella'' Gray, 1854 * ''Pharus (bivalve), Pharus'' Leach in Brown, 1844 * ''Phaxas'' Leach in Gray, 1852 * ''Siliqua (bivalve), Siliqua'' Megerle von Mühlfeld, 1811 * ''Sinonovacula'' Prashad, 1924 * ''Sinucultellus'' Cosel, 1993 * ''Sinupharus'' Cosel, 1993 References Pharidae, Biv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ensis
''Ensis'' is a genus of medium-sized edible saltwater clams, littoral bivalve molluscs in the family Pharidae. ''Ensis'', or razor clams, are known in much of Scotland as spoots, for the spouts of water they eject while burrowing into the sand, when visible at low tide. This term may also colloquially include members of the genus '' Solen''. '' Ensis magnus'' are known as bendies due to their slightly curved shell. Description The shells are long, narrow, and parallel-sided. This shape resembles a closed, old-fashioned straight razor (a cut-throat razor), or a closed jackknife ( pocket knife) and sometimes these clams are known as razor shells or jackknives. The shells in these species are fragile and can easily be damaged when digging for these clams. Ecology ''Ensis'' species live in clean sand on exposed beaches. They are capable of digging very rapidly; see the description under the Atlantic jackknife clam. Some clammers catch jackknives by pouring salt on the character ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solen Strictus
Gould's razor shell (''Solen strictus'') is a bivalve mollusc of the family Solenidae. It is common in Japan in sandy coastal zones of the western, southern and northeastern coasts, and also in South Korea, China and Taiwan. It lives on the sandy littoral zone The littoral zone, also called litoral or nearshore, is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely flood ..., preferring the depth of about 20–50 cm. In Weifang Cadong Province, China, researches have found that living S''olen strictus'' weighs an average of 12g and measures to a length of 10cm. See also * ensis directus (Atlantic jackknife clam) References Further reading * * * * Solenidae Bivalves described in 1861 Molluscs of the Pacific Ocean Molluscs of China Molluscs of Korea Molluscs of Japan Molluscs of Taiwan Marine molluscs of Asia Bivalves of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jackknife Clam
Jackknife clam is a common name which is used for several species in the genera ''Ensis'' and '' Solen'' within the family Solenidae, species which are found on Atlantic and Pacific beaches of temperate North America. Species in these families are also found elsewhere in the world, but in other English-speaking countries they usually have other common names. All the species in these genera have thin, highly elongate shells. Many of these bivalves are collected for food. Species include: *'' Ensis leei'' *'' Ensis minor'' *'' Ensis myrae'' *'' Solen viridis'' *'' Solen sicarius'' See also * Razor clam Razor clam is a common name for long, narrow, saltwater clams (which resemble a closed straight razor in shape), including: * Atlantic jackknife clam, ''Ensis leei'' (syn. ''Ensis directus'') * Gould's razor shell, ''Solen strictus'' * Pacific razo ... {{Animal common name Mollusc common names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Undersea Cable
Submarine cable is any electrical cable that is laid on the seabed, although the term is often extended to encompass cables laid on the bottom of large freshwater bodies of water. Examples include: *Submarine communications cable A submarine communications cable is a cable laid on the seabed between land-based stations to carry telecommunication signals across stretches of ocean and sea. The first submarine communications cables were laid beginning in the 1850s and car ... * Submarine power cable {{SIA fi:Merikaapeli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massachusetts Institute Of Technology
The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of modern technology and science. In response to the increasing Technological and industrial history of the United States, industrialization of the United States, William Barton Rogers organized a school in Boston to create "useful knowledge." Initially funded by a land-grant universities, federal land grant, the institute adopted a Polytechnic, polytechnic model that stressed laboratory instruction in applied science and engineering. MIT moved from Boston to Cambridge in 1916 and grew rapidly through collaboration with private industry, military branches, and new federal basic research agencies, the formation of which was influenced by MIT faculty like Vannevar Bush. In the late twentieth century, MIT became a leading center for research in compu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ', which itself comes from the Greek (). Anchors can either be temporary or permanent. Permanent anchors are used in the creation of a mooring, and are rarely moved; a specialist service is normally needed to move or maintain them. Vessels carry one or more temporary anchors, which may be of different designs and weights. A sea anchor is a drag device, not in contact with the seabed, used to minimize drift of a vessel relative to the water. A drogue is a drag device used to slow or help steer a vessel running before a storm in a following or overtaking sea, or when crossing a bar in a breaking sea. Anchoring Anchors achieve holding power either by "hooking" into the seabed, or weight, or a combination of the two. The weight of the anchor chain can be more than that of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biomimicry
Biomimetics or biomimicry is the emulation of the models, systems, and elements of nature for the purpose of solving complex human problems. The terms "biomimetics" and "biomimicry" are derived from (''bios''), life, and μίμησις ('' mīmēsis''), imitation, from μιμεῖσθαι (''mīmeisthai''), to imitate, from μῖμος (''mimos''), actor. A closely related field is bionics. Nature has gone through evolution over the 3.8 billion years since life is estimated to have appeared on the Earth. It has evolved species with high performance using commonly found materials. Surfaces of solids interact with other surfaces and the environment and derive the properties of materials. Biological materials are highly organized from the molecular to the nano-, micro-, and macroscales, often in a hierarchical manner with intricate nanoarchitecture that ultimately makes up a myriad of different functional elements. Properties of materials and surfaces result from a complex interpla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elbe
The Elbe ( ; ; or ''Elv''; Upper Sorbian, Upper and , ) is one of the major rivers of Central Europe. It rises in the Giant Mountains of the northern Czech Republic before traversing much of Bohemia (western half of the Czech Republic), then Germany and flowing into the North Sea at Cuxhaven, northwest of Hamburg. Its total length is . The Elbe's major Tributary, tributaries include the rivers Vltava, Ohře, Saale, Havel, Mulde, and Schwarze Elster. The Elbe river basin, comprising the Elbe and its tributaries, has a catchment area of , the twelfth largest in Europe. The basin spans four countries; however, it lies almost entirely just in two of them, Germany (65.5%) and the Czech Republic (33.7%, covering about two thirds of the nation's territory). On its southeastern edges, the Elbe river basin also comprises small parts of Austria (0.6%) and Poland (0.2%). The Elbe catchment area is inhabited by 24.4 million people; its biggest cities are Berlin, Hamburg, Prague, Dresden a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exotic Species
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately or accidentally. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are considered naturalized. The process of human-caused introduction is distinguished from biological colonization, in which species spread to new areas through "natural" (non-human) means such as storms and rafting. The Latin expression neobiota captures the characteristic that these species are ''new'' biota to their environment in terms of established biological network (e.g. food web) relationships. Neobiota can further be divided into neozoa (also: neozoons, sing. neozoon, i.e. animals) and ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
