Roboastra gracilis from Heron Island

May 16, 2006
From: Simon D. Power

Dear Bill

I found this nudibranch on the outer reef flat at Heron Island in April of this year. I looked through your forum and several books and have been unable to identify it. I would greatly appreciate your help in determining its identrity.

Locality: Heron Island, 20cm, Intertidal, Australia, Pacific ocean, 18 April 2006, Intertidal reef flat. Length: 4cm. Photographer: Simon David Power.

Many thanks,
David

davidpower_@hotmail.com

Power, S. D., 2006 (May 16) Roboastra gracilis from Heron Island. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16614

Dear David,
This is Roboastra gracilis, which feeds on other nudibranchs - mainly its close relatives, species of Tambja.
Best wishes,
Bill Rudman

Rudman, W.B., 2006 (May 16). Comment on Roboastra gracilis from Heron Island by Simon D. Power. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16614

Factsheet

Roboastra gracilis

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