What is this sea slug?

November 2, 2001
From: Fumio Kihara

Dear Sir,
In August, I went to Ohshima which is an island in Sagami Bay near Tokyo. While there, our instructor found one sea slug.
It seems similar to Ardeadoris egretta. Its main color is white, but the center of body is brown. And the gills is brown too. The size is about, may be 4cm. Although we search for it in Japanese sea slug books, we could not find its name. We would like to know what it was.
Sorry, on this site, there is too many datas and it is too hard to see all of it.

I have sent a photo of it. I would like to ask you that if you know the name of this sea slug.
Best Regards,
Fumio Kihara
Tokyo, Japan

fumio.kihara@marconi.com

Kihara, F., 2001 (Nov 2) What is this sea slug?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5600

Dear Fumio,
This is Glossodoris rufomarginata. It is a tropical species and does not seem to be that common in Japan. It is interesting that animals from China and Japan seem to have a very wide white region on the mantle. The species has quite a variable colour pattern throughout its geographical range.
best wishes,
Bill Rudman.

Rudman, W.B., 2001 (Nov 2). Comment on What is this sea slug? by Fumio Kihara. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5600

Factsheet

Glossodoris rufomarginata

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