Colour variation in Ceratosoma amoena

January 21, 2004
From: Sean McMahon


G'day,
I have come across a few nudibranchs on separate dives at Oak Park, Cronulla [Syney, NSW, Australia]. They appear to be Ceratosoma amoena. I have included photos of two separate individuals. I
Regards,
Sean.

16a@l52.navy.gov.au

McMahon, S., 2004 (Jan 21) Colour variation in Ceratosoma amoena. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11965

Dear Sean,
Yes these are a colour form of C. amoena. Have a look at the species Fact Sheet for some information on colour variation.

Youe photos are also quite helpful because they give us a bit more information on the sponge food of this species. As you can see in your photo alongside, the sponge it feeds on is often partially covered in other marine growths, so the slug appears to be just crawling over the bottom. In your upper photos however the sponge colony is relatively clean so it should be identifiable
Best wishes
Bill Rudman

Rudman, W.B., 2004 (Jan 21). Comment on Colour variation in Ceratosoma amoena by Sean McMahon. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11965

Factsheet

Ceratosoma amoenum

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