April 16, 1999
From: David & Leanne Atkinson
Here is a creature found and photographed by Judy Martin who was diving with is over Easter at Port Stephens [New South Wales, Australia]. The closest we could find was Crosslandia viridis but the colour (brownish green) and spots (bright blue) seem different. It was eating kelp.
David & Leanne Atkinson
firstname.lastname@example.orgAtkinson, D. & L., 1999 (Apr 16) Crosslandia? from Port Stephens. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/775
Dear David & Leannne,
I am pretty sure this is the brown 'form' of Crosslandia viridis. [See green version at Top of Page] It is certainly an amazing shape. From the side, as in your photo, the edge of the body in front of the large wing-like parapodia, forms a large raised ridge which terminates in the forward projecting rhinophore stalks/pockets.
The shape seems to be a way of camouflaging the animals on the brown algae or green seagrasses on which they are found. Although almost always found on plants, they are not herbivores, feeding instead on hydroid colonies which live on the plants.
Re: Crosslandia viridis from South Australia
From: Steve Leske, July 23, 2007
Crosslandia viridis from Papua New Guinea
From: Ray Izumi, December 24, 2003
Radula of Crosslandia viridis
From: Bill Rudman, September 14, 2002
Crosslandia viridis from Heron Island
From: Julie Marshall, April 20, 2001
Crosslandia viridis from South Australia
From: Stuart Hutchison, August 17, 2000