Elysia obtusa from the Marshall Ids

July 28, 2001
From: Scott Johnson

Hi Bill,
Elysia obtusa also occurs in the Marshall Islands, where I have found it in Enewetak, Bikini, and Kwajalein Atolls. I thought of this photo when Kathe mentioned Derbesia, but the brown filaments in the picture don't appear to me to be closely related to Bryopsis, so I presume it is something else. I do not recall seeing the Elysia eating this or any other algae. The animals here are generally found hidden away under rocks during the day.

Scott

johnson@kmr.ll.mit.edu

Johnson, S., 2001 (Jul 28) Elysia obtusa from the Marshall Ids. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4935

Thanks Scott,
Your alga looks like a red to me. Your observation about it hiding under rocks during the day fits with Julie Marshall's observations.
Cheers,
Bill Rudman

Rudman, W.B., 2001 (Jul 28). Comment on Elysia obtusa from the Marshall Ids by Scott Johnson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4935

Factsheet

Elysia obtusa

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