Aldisa sanguinea, a fairly uncommon nudibranch
August 8, 2003
From: Bruce Wight
Dear Bill,
Johanna and I saw lots of great natural behavior on last weekends dive trip out to San Miguel Island [Channel Islands National Park, California - July 2003]. Here is one of a series of messages showing some images I took during the two day trip.
This photo is of a specimen of Aldisa sanguinea a fairly uncommon nudibranch.
Best wishes,
Bruce Wight
bwproductions@earthlink.net
Wight, B., 2003 (Aug 8) Aldisa sanguinea, a fairly uncommon nudibranch. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/10651Thanks Bruce,
I have included a close-up alongside to show the very characteristic dark spots found in the dirsal midline of many species of Aldisa. They are usually outlined in a lighter colour and seem to be an attempt to mimic the oscula or common siphons found in many large sponge colonies.
Best wishes,
Bill Rudman
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