Dermatobranchus otome from Japan.

January 20, 2003
From: Jun Imamoto

Dear Bill,
Here is another sea slug, Dermatobranchus otome, which I observed in 2002 and i would like to include on the Forum. These sea slugs are found under stones or in the hollow of rocks. I hope these reports are useful for your research.

Upper right: Manazuru, Sagami Bay, Japan, 4 Nov 2002. Size approx: 6mm. Depth: Intertidal. Temperature: 20C. Photo: Jun Imamoto. Lower left: Manazuru, Sagami Bay, Japan, 8 Dec 2002. Size approx: 10mm. Depth: Intertidal. Temperature: 16C. Photo: Jun Imamoto Lower right: Futou Suruga-bay, Japan, 15 June 2002. Size approx: 20mm. Depth: 5m. Temperature: 19C. Photo: Kahoru Imamoto

Best Regards,
Jun Imamoto

Imamoto, J., 2003 (Jan 20) Dermatobranchus otome from Japan.. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Jun,
Thanks very much for these photos. It is very useful to see the colour variation in some of these species. It is interesting to see the black transverse band developing as the animal gets larger, and how the distinctive pinkish ocelli around the black spots on juveniles becomes much less noticeable in larger specimens.
Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Jan 20). Comment on Dermatobranchus otome from Japan. by Jun Imamoto. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from