Onchidiid from Thailand

March 17, 2001
From: Sylvain Le Bris

Dear Bill
I am sorry but my english is no good ! And my picture is not good too...

This species was found at Phuket Is. (Andaman Sea, Thailand) and Sichang Is. (Inner Gulf of Thailand) in the low tide, out of water ! This species is abundant and crawls on the rocks when the sun is shining and the temperature is very hot. At high tide, this species stays under rocks without moving.

It was about 6-7 cms long and 2-3 cms wide.
Could you please identify this species ?
Thanks
Sylvain

sylvain.lebris@freesbee.fr

Le Bris, S., 2001 (Mar 17) Onchidiid from Thailand. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3988

Dear Sylvain,
This is a Pulmonate Slug, related to land snails rather than a Sea Slug. Its mantle cavity has become an internal lung which enables it to live and breathe out of water. I am not sure what genus this species belongs to and I think the genera can only be separated by looking at their anatomy. As you can see from its long faecal string, it feeds on the algal/bacterial film which forms a layer over muddy intertidal surfaces.
Best wishes,
Bill Rudman.

Rudman, W.B., 2001 (Mar 17). Comment on Onchidiid from Thailand by Sylvain Le Bris. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3988

Factsheet

Marine Pulmonate slugs

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