Thorunna arbuta is a species of dorid nudibranch in the family Chromodorididae.MolluscaBase (2018). Thorunna arbuta Ortea, Bacallado & Valdés, 1992. Accessed on 2018-12-24.
Distribution This species was described from Danger Point, Torquay, Victoria, Australia, .
Description Thorunna arbuta has a body colour of bright pink with paler mottling, the foot, rhinophores and gills are the same colour. The mantle margin is indented at the sides and at each indent there is a large rounded patch of yellow edged with bright red flecks.
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