November 16, 2009
From: Marianne Ligthart
Though we know it does not concern a real seaslug we ask your help for identification!
Diving at Bonaire, at Petries Pillar, we found this little animal creeping on dead coral rubble at a depht of 4 - 5 meters.
At first we were, not succesfully, searching in the direction of Velutinidae and Lamellaridae because we expect a little shell inside. One siphon was clearly visible. Size: 15 - 20 mm.
Behavior: fast and active.
Shape: a bit flat, almost like a flatworm.
We saw one specimen.
There is some resemblance with Pleurobranchus areolatus. But finally we think that is not possible.
We hope you can give us more information!
Locality: Divesite: Petries Pillar. South-westcoast of Bonaire, near Kralendijk., 4 -5 m, Bonaire, Caribbean Sea, 01 March 2009, On dead coral rubble.. Length: 15 - 20 mm. Photographer: Marco Faasse.
email@example.comLigthart, M., 2009 (Nov 16) Pleurobranchus atlanticus from Bonaire. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22784
This is definitely a pleurobranch sea slug. It is the species I am calling Pleurobranchus atlanticus. Although not clear in your photo, some of the tubercles have triangular white patches on them creating the impression that there are pointed white tubercules scattered over the back.
Pleurobranchus atlanticus from Florida
From: Jay Wilmar, September 20, 2007
Pleurobranchus atlanticus and P. crossei
From: Bill Rudman, December 13, 2006
Pleurobranchus atlanticus from the Bahamas
From: Les Wilk, December 17, 2005
Pleurobranchus atlanticus from Jamaica
From: Ross W. Gundersen, October 22, 2003
Pleurobranchus evelinae = P. atlanticus
From: Bill Rudman, September 10, 2003
Pleurobranchus atlanticus from Netherlands Antilles
From: Linda Ianniello, September 18, 2002
Pleurobranchus atlanticus from the West Indies
From: Anne DuPont, September 23, 2001
Another notaspid from Colombia
From: Phanor Montoya, October 22, 2000