Okadaia from Japan?

April 13, 2000
From: Yasuhiro Shirai

Dear Bill,

I found this animal on rock and sand. I saw 5 or 6 individuals nearby. They are very small animals. Their length were 1.5mm-2mm!
Could you please identify this animal for me.

Data:
Location: Shima Pref. Mie Japan
Length: 2mm
Water temperature: 15C
Date Feb. 2000
Depth: -2m
Crawling on rock or sand

Best regards,
Yasuhiro Shirai

yasuhiro@e-net.or.jp

Shirai, Y., 2000 (Apr 13) Okadaia from Japan?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2261

Dear Yasuhiro,
Yes it could possibly be the species you suggest. Okadaia is one name for the genus. Have a look at the top of the page to see the many names applied to this species.

In correpondence, Dr Baba, considers specimens from Japan, which he calls Okadaia elegans, distinct from other west Pacific animals, based on various characters, including the number of large red eggs seen through the body wall. As I discuss at the Top of the Page, I think there is probably one widespread species.
Best wishes,
Bill Rudman.

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