Pleurobranchus grandis from the Red Sea

October 10, 2001
From: Luc De Loose


Dear Bill,
We dived in the Red Sea about two weeks ago [September 2001] and during a nightdive we saw a huge snail. That's what I think! Some thought a sea slug but I don't think so.
Could you determine this for me please?

It was found at Hurghada, Egypt, during a nightdive at a depth of ± 5m on 26 September 2001.
Dive place: Abu Kalawa
Photographer: Luc De Loose, with thanks to Staf Schreppers (camera owner)

Thanks for your help and lot's of luck and happiness with your Forum. It's really fantastic!!!

Sincerely
Luc De Loose,
Mechelen (Belgium)

ldlav@pandora.be

De Loose, L., 2001 (Oct 10) Pleurobranchus grandis from the Red Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5430

Dear Luc,
Since sea slugs are basically snails that have lost their shells, both you and your friends are correct. This is a side-gilled slug called Pleurobranchus grandis. They are called side-gilled slugs because they have on large gill whij lies along the right side of the body in the groove between the mantle and the foot. This species can grow to more than 30cm in length. In the upper photo you can see the tips of its two brown head tentacles poking out from the front of the mantle. As you will see from the other photos and messages on this page, it ranges in colour from a pale cream colour with a few dark brown markings to animals which are completely brown.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Oct 10). Comment on Pleurobranchus grandis from the Red Sea by Luc De Loose. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5430

Factsheet

Pleurobranchus grandis

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