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Liponema brevicornis : ウィキペディア英語版 | Liponema brevicornis
''Liponema brevicornis'' is a species of sea anemone in the Actiniidae family, commonly known as the pom-pom anemone or the tentacle shedding anemone. It is a deep water species and has been relatively little observed. It often remains unattached to a substrate and can roll across the ocean floor propelled by water currents.〔(Pom-pom anemone ) Monterey Bay Aquarium. Retrieved 2011-09-10.〕 == Description == ''L. brevicornis'' can grow from 25 centimetres to 30 centimetres (1 ft) in diameter. It can adopt various shapes ranging from globose and inflated to low and flattened. It has a well-developed base and a short, smooth column. The wide oral disc overhangs the column and is covered with a very large number of short tentacles arranged in whorls. There is a sphincter muscle at the base of each tentacle which can be contracted in order to jettison the tentacle.〔(''Liponema'' ) KU Natural History Museum. Retrieved 2011-09-10.〕〔D. F. Dunn and G. J. Bakus, ''Redescription and ecology of Liponema brevicornis (McMurrich, 1893), with definition of the family Liponematidae'', Astarte, 1977.〕
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