Re: Dermatobranchus ornatus from Japan

August 6, 2001
From: Nishina Masayoshi

Dear Dr.Rudman,

Re your question. As far as I know, the color of D. ornatus does not vary much here. Generally the colour in the image I sent is the normal color at Hachijo and Sagami Bay. The main features of the pattern are:
Dorsal color is beige white with a black or dark brown stain over the body. Rhinophores are brilliant blue. Rounded orange spots scattered over the body with orange colour band on the mantle.

I am not sure that whether there is any other color variation. But I've never seen other color variation here.

Best Regards,
Nishina Masayoshi

Nishina, M., 2001 (Aug 6) Re: Dermatobranchus ornatus from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Nishina,
I asked about the colour because in the other photos on the Forum the animals appear a much more drab colour with a dirty brownish background colour and quite dull orange markings. I was wondering whether their colour was affected by their food or perhaps their size.
Best wishes,
Bill Rudman.

Rudman, W.B., 2001 (Aug 6). Comment on Re: Dermatobranchus ornatus from Japan by Nishina Masayoshi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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