Phyllidia mimic [1]

March 9, 2006
From: Carl Scott

Attached is a photo of a nudi that I spotted on the rock island of Koh Doc Mai, near Phuket, Thailand. It clearly has external gills, yet closely resembles a Phyllidia species. I can't find it on your website, or any other reference.

Locality: Koh Doc Mai, 20 meters, Phuket, Thailand, Andaman, 20 January, 2006, rock wall. Length: 3 cm. Photographer: Carl Scott.

Please assist with identification.
Thanks.
Carl Scott.

cdscott@swbell.net

Scott, C.D., 2006 (Mar 9) Phyllidia mimic [1]. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16040

Dear Carl,
Have a look at the Fact Sheet on mimicry to see the many nudibranchs, and odd flatworm, that are very similar in colour pattern to species of the Phyllidiidae. Your animal is the chromodorid Chromodoris geometrica. Apart from being very similar in colour, it is one of the few species of Chromodoris which don't have a smooth mantle - the whitish rounded tubercles being an extra 'trick' in mimicking a species of Phyllidiella.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Mar 9). Comment on Phyllidia mimic [1] by Carl Scott. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16040

Factsheet

Chromodoris geometrica

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