Eubranchus prietoi from the French Mediterranean

August 10, 2006
From: Marina Poddubetskaia Ossokine

Dear Bill,

When I sent you my last message about Eubranchus prietoi from Arcachon Basin and Senegal, you said it was an 'unknown species which have been described and seldom seen again.'
That's funny since I meet this species everywhere I go. Last week I found it on the Mediterranean coast of France. And it is very common in Arcachon now too.

Locality: 'La digue', Port-Leucate , 3m, France, Mediterranean, 24 June 2006. Length: animal : 6mm / eggs : 2mm . Photographer: Marina Poddubetskaia Ossokine.

So, now we can extend the distribution of E. prietoi to the Mediterranean.
Also, please note that this animal and eggs were found on an hydroid different from Plumularia setacea, but similar to the food of Senegalese specimens.

Best wishes,
Nembro website

Poddubetskaia Ossokine, M. , 2006 (Aug 10) Eubranchus prietoi from the French Mediterranean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Marina,
Thanks for the record. The dark brown Y-shaped digestive gland duct, and the single row of cerata in front of the heart, certainly characterise this species.

I am glad you are in the position to bring an 'unknown' species into the spotlight. There are many abundant species out there which we know nothing about. Hopefully the Forum will give all those eager 'eyes' out there the opportunity to increase our knowledge of many of them.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Aug 10). Comment on Eubranchus prietoi from the French Mediterranean by Marina Poddubetskaia Ossokine. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Eubranchus prietoi

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