July 10, 2006
From: Dong Bum Koh
Here are some photos what I think is Aldisa cooperi with its egg ribbons from South Korea.
Locality: Mun Am. Gwang Won Prov., [E 129°5' N 37°3'] 15m, Korea, East Sea (cold sea), 02 July 2006, -. Length: Approx. 20mm. Photographer: Im Sung Hwang.
Dong Bum Koh
email@example.comKoh, D.B., 2006 (Jul 10) Aldisa cooperi from Korea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17063
This is an interesting find. I agree that this is Aldisa cooperi, The egg ribbon looks very similar to that illustrated from Japan by Baba, Hamatani & Hisai (1956 - as Aldisa sanguinea). Robilliard & Baba (1972) report it from all parts of Japan and Nth America from Alaska to California. Your find from Sth Korea is an interesting addition to its distribution.
The red sponge is most probably its food sponge.
- Baba, K., Hamatani, I. & Hisai, K. (1956) Observations on the spawning habits of some of the Japanese Opisthobranchia. 2. Publications of the Seto Marine Biological Laboratory, 5: 209-220. (Pls.24-26)
- Robilliard, G.A. & Baba, K. (1972) Aldisa sanguinea cooperi subspec. nov. from the coast of the State of Washington, with notes on its feeding and spawning habits (Nudibranchia; Doridididae: Aldisinae). Publications of the Seto Marine Biological Laboratory, 19: 409-414.
Aldisa cooperi from Carmel California
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