Onchidoris depressa? from Korea

November 24, 2009
From: Dong Bum Koh

Dear Bill,

I've got unexpected seaslug from Yellow Sea of Korea.
I guess it as a Onchidoris depressa but I'm not sure.

Locality: Tae An Beach , -5m, South Korea, Yellow Sea, 22 Aug. 2009. Length: 0.5 cm. Photographer: JI Yeon Lee.

Could you help me for correct ID?

Best regards,

Dong Bum Koh


drkoh@seasee.co.kr

D.B.Koh, 2009 (Nov 24) Onchidoris depressa? from Korea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22812

Dear Koh,

This is clearly the animal I have found in both tropical New Caledonia and the cool temperate waters of Tasmania. Both externally and anatomically I can find no differences between it and Onchidoris depressa from northern Europe. Your discovery of what externally appears to be the same species suggests it is a recent 'hitchhiker'. I would have thought if this species had been in the northwestern Pacific for any length of time it would have been noted by Baba or one of the many Japanese workers who have studied the fauna.

It would be nice to include some photos of European O. depressa on the Forum for comparison.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Nov 24). Comment on Onchidoris depressa? from Korea by Dong Bum Koh. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22812

Factsheet

Onchidoris depressa

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