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Elasipodida is an order of sea cucumbers. They are somewhat unusual in appearance, in comparison with other sea cucumbers, having numerous appendages, including conical papillae and leaf-like tentacles. Although many species are benthic, a number are pelagic, and may have their appendages modified to form sails or fins. Most members of the order inhabit deep-sea environments, like ''Enypniastes''. ==Classification== According to World Register of Marine Species : * family Deimatidae Théel, 1882 * family Elpidiidae Théel, 1882 * family Laetmogonidae Ekman, 1926 * family Pelagothuriidae Ludwig, 1893 * family Psychropotidae Théel, 1882 Image:Pelagothuria natatrix.jpg|The only true pelagic echinoderm known to date : ''Pelagothuria natatrix'' (here close to the Galapagos). Image:Expl0790 - Flickr - NOAA Photo Library.jpg|''Benthodytes sp.'' Image:Scotoplanes globosa and crab.jpg|''Scotoplanes globosa'' (a.k.a. "sea pig", family Elpidiidae) Image:Expl5475.jpg|A Pelagothuriidae Image:Expl5494.jpg|A Psychropotidae 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Elasipodida」の詳細全文を読む スポンサード リンク
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