North Atlantic from Mediterranean to Norway, and Canadian Arctic to New Jersey, USA.
The Netherlands. Photos: Peter van Bragt.
Feeds mainly on hydroids of the genus Tubularia and passes through a number of generations each year. Bleakney (1996) reports that it changes from one seasonal species of Tubularia to another in Atlantic Canada as the year progresses. Grows to about 20mm in length but usually smaller.
• Bleakney, S. (1996) Sea Slugs of Atlantic Canada and the Gulf of Maine.
• Thompson, T.E. & Brown, G.H. (1984) Biology of Opisthobranch Molluscs, Vol 2. Ray Society: London.
Rudman, W.B., 2000 (September 17) Cuthona gymnota (Couthouy, 1838). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/cuthgymn
Re: Cuthona gymnota? from Cork, Ireland
From: Marina Ossokine, June 20, 2006
Cuthona gymnota? from Cork, Ireland
From: Jamie Malone, June 16, 2006
Cuthona gymnota from Maine, USA
From: Alan Shepard, September 2, 2003
Re: Photos of Cuthona gymnota
From: Bernard Picton, March 23, 2001
Photos of Cuthona gymnota
From: Bernard Picton, March 20, 2001
Cuthona gymnota from the Netherlands
From: Peter H. van Bragt , September 26, 2000