Okenia hallucigenia from Bare Island, Sydney

May 9, 2005
From: R. Fea & J. Coombs

Note added 10 Dec. 2007: This species has been identified as Okenia atkinsonorum [see message #21273].

Dear Dr Rudman,
Could you identify this nudibranch from  Bare Island please. It was taken at Bare Island Deep Wall (at about 15 m) and was no more than 5mm long. We thought it might have been a red-lined flabellina but we're not sure about it's uniform rosy appearance.

Locality: Bare Island, Botany Bay, Sydney, NSW, Australia. Depth: 6 m and 15 m. Length: 5 mm - 10 mm. 04 February 2005, 08 May 2005. Sponges, boulders. Photographer: Roxanne Fea

Many thanks,
Roxanne Fea & Jason Coombs

roxannef@mgnsw.org.au

Fea, R. & Coombs, J., 2005 (May 9) Okenia hallucigenia from Bare Island, Sydney. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13723

Dear Roxanne and Jason,
This is Okenia hallucigenia  which is usually found on, or near, the pinkish red bryozoan colony, Pleurotoichus clathratus, on which it feeds. The reddish plant-like growth in your photo is the bryozoan.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (May 9). Comment on Okenia hallucigenia from Bare Island, Sydney by R. Fea & J. Coombs. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13723

Factsheet

Okenia atkinsonorum

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