Spurilla australis from Western Australia
February 20, 2004
From: Mark Gerlach
Hi Bill,
I photographed this seaslug in the Swan River, near Rocky Bay, [Perth Western Australia]. Is it Spurilla australis? It looks darker then pictures I have seen.
Depth was about 3m
Sandy bottom with brown seaweed.
Slug lengh 20mm.
Cheers,
Mark.
silverthorne@bigpond.com
Gerlach, M., 2004 (Feb 20) Spurilla australis from Western Australia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12250Dear Mark,
Yes this is Spurilla australis. Much of the brown colouration comes from the zooxanthellae in their bodies which I discuss in the species Fact Sheet. The darker brown the zooxathellae, and the greater their concnetration, the darker the background colour of the slug
Best wishes
Bill Rudman
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