Jorunna sp. 1.

Suborder: DORIDINA
Family: Dorididae


Found throughout the tropical Indo-West Pacific.


On purple sponge, Callyspongia sp, Kurnell, Botany Bay, New South Wales, Australia. May 1986. PHOTO: Bill Rudman


Defensive colouration in sea slugs

Species of Jorunna are superficially very similar to Rostanga but they differ in reproductive and radular morphology. This purple 'species' is always associated with a similarly coloured sponge. However there are also other 'species' with colours matching their food sponges so it is possible there is only one variable species which changes colour to match its food sponge.

Authorship details
Rudman, W.B., 1998 (October 14) Jorunna sp. 1. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

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  1. Jorunna from Bare Island, Sydney
    From: Nicholas Missenden, September 21, 2005
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    From: Denis Riek, February 2, 2005

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