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List Of Echinoderms Of The Houtman Abrolhos
The marine waters of the Houtman Abrolhos, an island chain off the coast of Western Australia, has been recorded as containing 172 species of echinoderm in ?? genera. This extremely high diversity has been attributed to a combination of factors, namely: the position of the Houtman Abrolhos within a biotone between temperate and tropical waters; the wide variety of habitats; and the Leeuwin Current, which both transports tropical species southwards, and keeps the reef warm enough for them to survive. This is a list of echinoderms of the Houtman Abrolhos: Crinoidea * ''Capillaster multiradiatus'' * ''Clarkcomanthus littoralis'' * ''Comanthus alternans'' * ''Comanthus briareus'' * ''Comanthus gisleni'' * ''Comanthus parvicirrus'' * ''Comanthus wahlbergi'' * ''Comanthina variabilis'' * ''Comaster distinctus'' * ''Comatella maculata'' * ''Comatella nigra'' * ''Comatella stelligera'' * ''Comatula pectinata'' * ''Comatula purpurea'' * ''Comatula solaris'' * ''Comatulella brachiolata ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diadema Setosum
''Diadema setosum'' is a species of long-spined sea urchin belonging to the family Diadematidae. It is a typical sea urchin, with extremely long, hollow spines that are mildly venomous. ''D. setosum'' differs from other '' Diadema'' with five, characteristic white dots that can be found on its body. The species can be found throughout the Indo-Pacific region, from Australia and Africa to Japan and the Red Sea. Despite being capable of causing painful stings when stepped upon, the urchin is only slightly venomous and does not pose a serious threat to humans. Description As a member of the class Echinoidea, the anatomy of ''Diadema setosum'' is that of a typical sea urchin. All of the animal's internal organs are enclosed within the spherical, black test that is essentially the body of the organism. However, the body is not perfectly spherical – ''Diadema'' tests are slightly dorso-ventrally compressed. Protruding outwards from the central body are the long spines iconic of a sea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
