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Pseudarchaster Discus
''Pseudarchaster discus'' is a species of starfish from the Pseudarchasteridae family. This starfish has a mouth opening on its bottom side. The torso consists of a disk with arms. This starfish can regenerate a lost or damaged arm from its body. This species belongs to the genus ''Pseudarchaster ''Pseudarchaster'' is a genus of echinoderms belonging to the family Pseudarchasteridae. The genus has almost cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all o ...'' and can be found in the Antarctic Ocean and the Magellan Strait. The scientific name of this species was first published in 1889 by Salden Pseudarchaster discusWorld Register of Marine Species (WoRMS) accessed 9/21/15 References Pseudarchasteridae Animals described in 1889 {{asteroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Starfish
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class Asteroidea. About 1,900 species of starfish live on the seabed in all the world's oceans, from warm, tropical zones to frigid, polar regions. They are found from the intertidal zone down to abyssal depths, at below the surface. Starfish are marine invertebrates. They typically have a central disc and usually five arms, though some species have a larger number of arms. The aboral or upper surface may be smooth, granular or spiny, and is covered with overlapping plates. Many species are brightly coloured in various shades of red or orange, while others are blue, grey or brown. Starfish have tube feet operated by a hydraulic system and a mouth at the centre of the oral or lower su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudarchasteridae
Pseudarchasteridae is a family of echinoderms belonging to the order Paxillosida. Genera: * '' Gephyreaster'' Fisher, 1910 * ''Paragonaster'' Sladen, 1889 * '' Perissogonaster'' Fisher, 1913 * ''Pseudarchaster ''Pseudarchaster'' is a genus of echinoderms belonging to the family Pseudarchasteridae. The genus has almost cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all o ...'' Sladen, 1889 * '' Skiaster'' Blake & Jagt, 2005 References Paxillosida Echinoderm families {{Asteroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudarchaster
''Pseudarchaster'' is a genus of echinoderms belonging to the family Pseudarchasteridae. The genus has almost cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext .... Species: *'' Pseudarchaster alascensis'' *'' Pseudarchaster discus'' *'' Pseudarchaster dissonus'' *'' Pseudarchaster diversigranulatus'' *'' Pseudarchaster garricki'' *'' Pseudarchaster gracilis'' *'' Pseudarchaster hispidus'' *'' Pseudarchaster jordani'' *'' Pseudarchaster macdougalli'' *'' Pseudarchaster microceramus'' *'' Pseudarchaster motutaraensis'' *'' Pseudarchaster mozaicus'' *'' Pseudarchaster myobrachius'' *'' Pseudarchaster obtusus'' *'' Pseudarchaster oligoporus'' *'' Pseudarchaster ornatus'' *'' Pseudarchaster parelii'' *'' Pseudarchaster pectinifer'' *'' Pseudarc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctic Ocean
The Southern Ocean, also known as the Antarctic Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica. With a size of , it is regarded as the second-smallest of the five principal oceanic divisions: smaller than the Pacific, Atlantic, and Indian oceans but larger than the Arctic Ocean. Over the past 30 years, the Southern Ocean has been subject to rapid climate change, which has led to changes in the marine ecosystem. By way of his voyages in the 1770s, James Cook proved that waters encompassed the southern latitudes of the globe. Since then, geographers have disagreed on the Southern Ocean's northern boundary or even existence, considering the waters as various parts of the Pacific, Atlantic, and Indian oceans, instead. However, according to Commodore John Leech of the International Hydrographic Organization (IHO), recent oceanographic research has discovered the importance of Southern C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magellan Strait
The Strait of Magellan (), also called the Straits of Magellan, is a navigable sea route in southern Chile separating mainland South America to the north and Tierra del Fuego to the south. The strait is considered the most important natural passage between the Atlantic and Pacific oceans. It was discovered and first traversed by the Spanish expedition of Ferdinand Magellan in 1520, after whom it is named. Prior to this, the strait had been navigated by canoe-faring indigenous peoples including the Kawésqar. Magellan's original name for the strait was ''Estrecho de Todos los Santos'' ("Strait of All Saints"). The King of Spain, Emperor Charles V, who sponsored the Magellan-Elcano expedition, changed the name to the Strait of Magellan in honor of Magellan. The route is difficult to navigate due to frequent narrows and unpredictable winds and currents. Maritime piloting is now compulsory. The strait is shorter and more sheltered than the Drake Passage, the often stormy open se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
