Nudibranchs from the Yellow Sea - aeolid

June 29, 2006
From: Dong Bum Koh

Dear Bill,

As I mentioned in my first message [#16960] sea slugs from the Yellow Sea (between China & Korea) are not well-known because poor visibility & very strong currents makes its bad for diving..

Here is another species photographed last weekend by a colleague of mine. It looks like Cuthona columbiana

Locality: Gogunsan islands, [Diving site : E 126°4' N 35°8'] 10m, Korea, Yellow Sea, 18 June 2006, Length: unknown. Photographer: Sung Soon Choi.

Best regards.
Dong Bum Koh

drkoh@seasee.co.kr

Koh, D.B., 2006 (Jun 29) Nudibranchs from the Yellow Sea - aeolid. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17009

Dear Koh,
As with the last message, I suspect this is not the species you have suggested. It certainly is similar in colour to some of the forms of Cuthona columbiana but its general shape suggests to me that it is a glaucid rather than a tergipedid aeolid. One very distinct difference between the two families is that in the Tergipedidae the anterior corners of the foot are rounded while in the Glaucidae they are extended often into elongate points, tentacle-like in shape. I think that I can see one of the tentacular foot corners just above the juvenile starfish in the close-up photo alongside.

I may be quite wrong, so I would appreciate some feed-back from those with a personal knowledge of the north Pacific fauna. It doesn't seem to be a species from the west coast of Nth America, but it could be.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Jun 29). Comment on Nudibranchs from the Yellow Sea - aeolid by Dong Bum Koh. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17009

Factsheet

Unidentified - North West Pacific (Japan, China)

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