Tylodina perversa from the Mediterranean

January 26, 2005
From: Adrian Valls


Hi,
I saw this specimen in 6 meters of water, on Posidonia, water temp aprox 14C, at 1:00PM on the Costa Brava, specifically Cala Jugadera in Cap de Creus, Spain, just south of France on the Mediterranean.13th Jan 2005

It was around 3-4 cm long, 2 cm tall and 2 wide.

The top is round and conical as seen in the blurry top view, (sorry!) but didn't seem hard. I thought it could be a mantle. The other picture is a view from behind, with our friend heading down and away from the camera.

Any help in identification would be great!
Thanks,
Adrian Valls

avalls108@hotmail.com

Valls, A, 2005 (Jan 26) Tylodina perversa from the Mediterranean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12955

Dear Adrian,
I am pretty sure this is the opisthobranchTylodina perversa , which has a conical shell. It's a bit hard to be sure because I can't see any of the head clearly, but the shape of the one set of head tentacles, I can see, look very like those of the rhinophores of Tylodina. Tylodina is a sponge feeder, so if my identification is correct, then it is just crawling over the Posidonia.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Jan 26). Comment on Tylodina perversa from the Mediterranean by Adrian Valls. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12955

Factsheet

Tylodina perversa

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