Okenia? from Hachijo Is., Japan

July 13, 2001
From: Nishina Masayoshi


Dear Dr.Rudman,
Here is another of the small animals that my friend Mr.Jun Imamoto found and photographed on our recent visit [July 2001] to Hachijo Island, Izu-Islands, about 300 k south of Tokyo, Japan. They were found at 6-7M depth and were all around 5mm, long.

Maybe this is a kind of Goniodoris?

Best Regards,
Nishina Masayoshi

nishina@hpe15.wips.co.jp

Nishina, M., 2001 (Jul 13) Okenia? from Hachijo Is., Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4736

Note added 9 February 2008: This species has recently been named Okenia rhinorma [see message #21366 ].

Dear Nishina,
What an interesting little animal. I don't recognise this species but I think it is a species of Okenia or a closely related genus. There is a European species, Okenia pulchella which also has this high body shape. I am not sure whether the very large rhinophores are a sign that the animal is a juvenile, like in the case of Facelina quadrilineata, or not. Of course we can't be sure until someone looks at its anatomy.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Jul 13). Comment on Okenia? from Hachijo Is., Japan by Nishina Masayoshi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4736

Factsheet

Okenia rhinorma

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