Calmella cavolini from Mediterannean France

May 31, 2006
From: Dominique Horst

I have some difficulties in identifying this nudibranch. BUt on lookinh through your site I think it is Calmella cavolini Verany, 1846. I guess you will confirm this in your answer... Many thanks and congratulation for this site which is admirable.

Locality: Cap d'Antibes, 5m, Antibes, Mediterranea, 8 May 2006, vertical rock. Length: 7-8 mm. Photographer: Dominique Horst.

Many thanks in advance.
Kind regards,

Horst, D., 2006 (May 31) Calmella cavolini from Mediterannean France. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Dominique,
Thanks very much for these nice photos. From the colour and general shape of the animal I am pretty sure it is Calmella cavolini. The purple marks on each side of the head are very characteristic and are the internal jaw plates, which are purple in this species, showing through the almost transparent body wall. Another distinctive feature, which you can't see that clearly in these photos, is that each group of cerata has a common stalk or lobe on which all the cerata are attached.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (May 31). Comment on Calmella cavolini from Mediterannean France by Dominique Horst. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Calmella cavolini

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