Goniobranchus thompsoni is a species of very colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.Bouchet, P. (2021). Goniobranchus thompsoni Rudman, 1983. In: MolluscaBase (2026). Accessed through: World Register of Marine Species on 2026-04-18
Distribution This species was described from Providential Hd, Wattamolla Bay, Royal National Park, Sydney. It has only been reported from New South Wales.Rudman, W.B., 1999 (June 3) Chromodoris thompsoni Rudman, 1983. [In] Sea Slug Forum. Australian Museum, Sydney.
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