Shell visible in Aplysia kurodai

June 7, 2005
From: Dong Bum Koh

Dear Bill,
I observed the rudimentary shell of living Aplysia kurodai.
Usually it is not visible. Can you suggest any reason why it is so visible? 

Locality:  Hwa Soon. Jeju island, South Korea. Depth: 4 m. Dec. 2004. Sandy bottom. Photographer: Byung Ro Yun

Best regards,
Dong Bum Koh

D. B. Koh, 2005 (Jun 7) Shell visible in Aplysia kurodai. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Koh,
I think something has damaged this animal - perhaps something has tried to eat it. In the upper photo there is a large white patch on the head which looks very much like a bite. In the photo alongside the shell is cracked and the mantle on the right side (nearest the viewer) has been ripped, torn or bitten off. my feeling is that these animals are dying, or at least damaged.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Jun 7). Comment on Shell visible in Aplysia kurodai by Dong Bum Koh. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Aplysia kurodai

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