nudibranch/anemone association

February 4, 1999
From: Keven Reed

On June 23, 1996 my scuba partner noticed a nudibranch on a beaded anemone, Heteractic aurora. The nudibranch was Jorunna funebris. Seeing the J. funebris/blue sponge photos on this web page, made me recollect and recheck my field notes.

Does anyone know of any significance to this observation? I did not notice any damage to either animal, and the nudibranch appeared healthy when I placed it in my home aquarium. I returned it to the ocean five days later, but could not relocate the H. aurora due to poor visibility. The site was Okinawa, Japan, dove from the shore at approx' 26 degrees 26' N, 127 degrees 46' E. Ocean temperature at scuba depth was 27C/81F.

Keven Reed
Hawaii

reedk001@hawaii.rr.com

Reed, K., 1999 (Feb 4) nudibranch/anemone association. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/535

Dear Keven,
I suspect your Jorunna was just blundering through the beaded anemone colony. I don't know any nudibranchs that feed on beaded anemones. In New South Wales, however, Philippia lutea, an architectonicid snail, - which are now considered closely related to opisthobranchs - feeds on Corynactis. I've added a picture of it above.
Bill Rudman.

Rudman, W.B., 1999 (Feb 4). Comment on nudibranch/anemone association by Keven Reed. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/535

Factsheet

Jorunna funebris

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