Cuthona viridis from Massachusetts

June 14, 2002
From: Alan Shepard

Dear Dr. Rudman -
I've attached a photo I took recently at Folly Cove in Gloucester, Massachusetts of Cuthona viridis. I dive this cove very frequently and although I've found many species of nudibranchs over the years it is the first time I've found Cuthona viridis. I sent the photo to Dr. Larry Harris at the University of New Hampshire and he verified the ID and noted that it is an uncommon find in our area but if you look hard enough it will turn up. Anyway this one was in about 10 to 12 meters of water and was about 12 to 14 millimeters long.

Alan Shepard

Shepard, A., 2002 (Jun 14) Cuthona viridis from Massachusetts. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Alan,
I see Sherman Bleakney (1996) records this from Nova Scotia, which is the first time it had been reported from the east coast of North America.
Bill Rudman


Cuthona viridis

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