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Pelagothuria Natatrix
''Pelagothuria'' is a genus of sea cucumbers in the family Pelagothuriidae. It is monotypic, being represented by the single species ''Pelagothuria natatrix''. Characteristics This sea cucumber is somewhat unusual in appearance in comparison with other sea cucumbers (and even within its family), as it looks more like a jellyfish with its large umbrella-like swimming structure supported by a ring of around 12 highly modified oral tentacles, its small tapered body and its swimming position with the mouth on top. The body is translucent with a pale purple pigmentation. The mouth is surrounded by around 15 short feeding tentacles like any sea cucumber, and the veil can be contracted like jellyfishes do (it is interrupted at the central ventral radius). The animal seems to reach around 16 cm in total diameter. This species constitutes the only true pelagic holothurian (and even echinoderm) known to date. However, its swimming seems mostly passive, more like slightly controlled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelagothuria Natatrix 1,400 Meters
''Pelagothuria'' is a genus of sea cucumbers in the family Pelagothuriidae. It is monotypic, being represented by the single species ''Pelagothuria natatrix''. Characteristics This sea cucumber is somewhat unusual in appearance in comparison with other sea cucumbers (and even within its family), as it looks more like a jellyfish with its large umbrella-like swimming structure supported by a ring of around 12 highly modified oral tentacles, its small tapered body and its swimming position with the mouth on top. The body is translucent with a pale purple pigmentation. The mouth is surrounded by around 15 short feeding tentacles like any sea cucumber, and the veil can be contracted like jellyfishes do (it is interrupted at the central ventral radius). The animal seems to reach around 16 cm in total diameter. This species constitutes the only true pelagic holothurian (and even echinoderm) known to date. However, its swimming seems mostly passive, more like slightly controlled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Cucumbers
Sea cucumbers are echinoderms from the class Holothuroidea (). They are marine animals with a leathery skin and an elongated body containing a single, branched gonad. Sea cucumbers are found on the sea floor worldwide. The number of holothurian () species worldwide is about 1,717, with the greatest number being in the Asia-Pacific region. Many of these are gathered for human consumption and some species are cultivated in aquaculture systems. The harvested product is variously referred to as '' trepang'', ''namako'', ''bêche-de-mer'', or ''balate''. Sea cucumbers serve a useful role in the marine ecosystem as they help recycle nutrients, breaking down detritus and other organic matter, after which bacteria can continue the decomposition process. Like all echinoderms, sea cucumbers have an endoskeleton just below the skin, calcified structures that are usually reduced to isolated microscopic ossicles (or sclerietes) joined by connective tissue. In some species these can sometim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelagothuriidae
Pelagothuriidae is a family of deep-sea swimming sea cucumbers. They are somewhat unusual in appearance, in comparison with other sea cucumbers, having numerous appendages, including conical papillae and leaf-like tentacles. Most of them are benthopelagic, which means that they are able to swim for a time from the bottom : the species ''Pelagothuria natatrix'' is the only true pelagic holothurian (and echinoderm, to date) ; it looks like a jellyfish. Most members of the order inhabit deep-sea environments, like ''Enypniastes''. Classification Family: Pelagothuriidae * genus ''Enypniastes ''Enypniastes'' is a genus of deep-sea sea cucumber. It is monotypic, being represented by the single species ''Enypniastes eximia''. Due to its unique appearance, the species has been dubbed the headless chicken fish, headless chicken monster, ...'' Théel, 1882 * genus '' Pelagothuria'' Ludwig, 1893 References * * Notes Echinoderm families {{Holothuroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jellyfish
Jellyfish and sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals with umbrella-shaped bells and trailing tentacles, although a few are anchored to the seabed by stalks rather than being mobile. The bell can pulsate to provide propulsion for highly efficient animal locomotion, locomotion. The tentacles are armed with Cnidocyte, stinging cells and may be used to capture prey and defend against predators. Jellyfish have a complex Biological life cycle, life cycle; the medusa is normally the sexual phase, which produces planula larvae that disperse widely and enter a sedentary polyp (zoology), polyp phase before reaching sexual maturity. Jellyfish are found all over the world, from surface waters to the deep sea. Scyphozoans (the "true jellyfish") are exclusively marine habitats, marine, but some hydrozoans with a simila ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samoa
Samoa, officially the Independent State of Samoa; sm, Sāmoa, and until 1997 known as Western Samoa, is a Polynesian island country consisting of two main islands (Savai'i and Upolu); two smaller, inhabited islands (Manono Island, Manono and Apolima); and several smaller, uninhabited islands, including the Aleipata Islands (Nu'utele, Nu'ulua, Fanuatapu and Namua). Samoa is located west of American Samoa, northeast of Tonga (closest foreign country), northeast of Fiji, east of Wallis and Futuna, southeast of Tuvalu, south of Tokelau, southwest of Hawaii, and northwest of Niue. The capital city is Apia. The Lapita culture, Lapita people discovered and settled the Samoan Islands around 3,500 years ago. They developed a Samoan language and Samoan culture, Samoan cultural identity. Samoa is a Unitary state, unitary Parliamentary system, parliamentary democracy with 11 Administrative divisions of Samoa, administrative divisions. It is a sovereign state and a member of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hubert Jacob Ludwig
Hubert is a Germanic masculine given name, from ''hug'' "mind" and ''beraht'' "bright". It also occurs as a surname. Saint Hubertus or Hubert (c. 656 – 30 May 727) is the patron saint of hunters, mathematicians, opticians, and metalworkers. People with the given name Hubert This is a small selection of articles on people named Hubert; for a comprehensive list see instead . *Hubert Aaronson (1924–2005), F. Mehl University Professor at Carnegie Mellon University *Hubert Adair (1917–1940), World War II Royal Air Force pilot *Hubert Boulard, a French comics creator who is unusually credited as "Hubert" * Hubert Brasier (1917–1981), a Church of England clergyman, more famously the father of UK Prime Minister Theresa May *Hubert Buchanan (born 1941), a United States Air Force captain and fighter pilot *Hubert Chevis (1902–1931), a lieutenant in the Royal Artillery of the British Army who died of strychnine poisoning in June 1931 * Hubert Davies, British playwright and d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Albatross (1882)
The second USS ''Albatross'', often seen as ''USFC Albatross'' in scientific literature citations, was an iron-hulled, twin-screw steamer in the United States Navy and reputedly the first research vessel ever built especially for marine research. ''Albatross'' was laid down at Wilmington, Delaware, by Pusey and Jones in March 1882; launched on 19 August 1882, and commissioned on 11 November 1882, with Lt. Zera L. Tanner in command. Tanner, who had superintended the ship's design and construction, would command ''Albatross'', a Navy-crewed vessel assigned to the United States Fish Commission, a civilian government agency, for nearly 12 years. Early years Following trial operations between Wilmington and Washington, D.C. from 30 December 1882 to 13 February 1883, ''Albatross'' returned to her builder's yard for engine alterations. While steaming back to Washington, the ship experimented with her dredging equipment, and arrived at the nation's capital on 25 March 1883. She left th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
