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Tritonia wellsi : ウィキペディア英語版 | Tritonia wellsi
''Tritonia wellsi'', the sea whip slug, is a species of nudibranch, a shell-less marine gastropod mollusc in the family Tritoniidae. The type locality is Beaufort, North Carolina.〔(''Tritonia wellsi'' - Er. Marcus, 1961 ) Malacolog: A Database of Western Atlantic Marine Mollusca. Retrieved 2011-12-10.〕 ==Description== ''Tritonia wellsi'' is white and grows to about 1.5 centimetres (0.6 in) long. The head bears a pair of rhinophores (sensory organs) each with a sheath at its base. There are also six tentacles on the head in a transverse line. The body has two longitudinal rows of arborescent (tree-like) gills which resemble the polyps of the whip corals on which it lives and feeds. It is adapted for life on the coral, ''Leptogorgia virgulata'', and is found nowhere else. It closely resembles the related species, ''Tritonia bayeri'', which has much the same range.
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