Is this a seaslug?

May 29, 2007
From: Mirjam Broos

Dear Bill,

I would like to know if this "creature" is a seaslug. If yes, what kind of seaslug is it?

Locality: Teluk Kambahu, Lembeh Strait, ?, North Sulawesi, Indonesia, Celebes Sea, 10 october 2006, muckdiving. Length: ?. Photographer: Geert Prast.

Mirjam Broos

Broos, M., 2007 (May 29) Is this a seaslug?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Mirjam,
I must say when I first saw your photo I was a bit puzzled - and wished I could touch the animal. In the field, my first reaction to something puzzling - after watching it for a bit - is to gently touch it to see what it does. I am sure if I touched this it would have closed up because I think this is a bivalve of some sort - perhaps a Spondylus [= Thorny Oyster] a group which have spectacularly colourful and elaborate edges to the mantle flaps which line the inside of their shells, and in fact secrete the new shell as the animal grows.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (May 29). Comment on Is this a seaslug? by Mirjam Broos. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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