Trapania circinata is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Goniodorididae.Bouchet, P. (2015). Trapania circinata. In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2015-10-17
Distribution This species was first described on the Marshall Islands.Rudman, W.B., 2008 (March 13) Trapania circinata Gosliner & Fahey, 2008. [In] Sea Slug Forum. Australian Museum, Sydney.
Description This goniodorid nudibranch is translucent white in colour. The oral tentacles and rhinophores are black and the lateral papillae and gills are translucent with black spots.
Ecology Trapania circinata probably feeds on Entoprocta which often grow on sponges and other living substrata.
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