Okenia echinata from Japan.

January 18, 2003
From: Jun Imamoto


Dear Bill,
Here are some photos of Okenia echinata for the Forum. These sea slugs were found on weed covered rocks. I am happy if these reports are useful for your research.

Data: Osezaki Suruga Bay, Japan
Upper right: 27 Jul 2002, Size approx: 5mm, Depth: 2m, Temperature: 26C
Lower photos: 30 Apr 2002, Size approx: 5mm, Depth: 5m, Temperature: 19C
Photos: Jun Imamoto

Best Regards,
Jun Imamoto
http://umiushi.zive.net/

imamoto@wips.co.jp

Imamoto, J., 2003 (Jan 18) Okenia echinata from Japan.. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8858

Thanks Jun,
I don't think there has been anything published on this species since Baba's original description. Your lower photo, of the plain brownish animal with white specks, matches Baba's original description very well. I didn't realise this red marked animal was a colour form. Have you any photos that show individuals with an intermediate colour pattern? For example light brown animals with red on the papillae, or dark brown-black animals with no red colouration.
Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Jan 18). Comment on Okenia echinata from Japan. by Jun Imamoto. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8858

Factsheet

Okenia echinata

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