(Alder & Hancock, 1844)
Northeastern Atlantic from Norway to western Mediterranean.
Upper: Sete, étang de Thau, Mediterrnaena coast of France, March 2000, depth: 5m, size: 1cm. Photo: J-P. Bielecki.
Lower: approx. 10mm long, crawling on a kelp frond at 7 metres in NW Scotland. PHOTO: Jim Anderson. See Scottish Nudibranchs website.
This species has in the past been confused with Eubranchus tricolor but E. farrani is quite distinct, being more slender, smaller with fewer cerata of less compressed shape and different colour patterns.
The maximum length of the animal is 20 mm (23 mm in the Bay of Naples, according to Schmekel & Portmann, 1982). The body is typically white or grey-white, with orange-tipped rhinophores and oral tentacles (sometimes with white apices), with scattered orange spots and blotches on the dorsum, and white inflated cerata having a conspicuous sub-terminal orange or yellow ring. Occasional variants show individual exaggeration of certain markings. The entire body, cerata and all, may be of a beautiful golden hue. In others there may be brown patches on the body, and in one specimen (from Pembrokeshire) nearly the whole body was dark chocolate brown in colour (approaching the Form B of Edmunds & Kress). Other specimens may have orange blotches ringed with blue (Garstang, 1980; Farran, 1903), and the juveniles may exhibit no colour at all other than the pale brown or salmon pink hepatic contents of the cerata.
The cerata are arranged in up to 10 diagonal rows, of up to 5 cerata in each half-row. Their shape may be variable from minute to minute but it can always be seen that they are moderately inflated.
• Edmunds, M. & Kress, A. (1969) On the European species of Eubranchus (Mollusca Opisthobranchia). Journal of the Marine Biological Association of the United Kingdom, 49: 879-912.
• Thompson, T.E. & Brown, G.H. (1984) Biology of Opisthobranch Molluscs, Vol 2. Ray Society: London.
Rudman, W.B., 2003 (October 14) Eubranchus farrani (Alder & Hancock, 1844). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/eubrfarr
White form of Eubranchus farrani from the Baltic Sea
From: Thorsten Walter, January 13, 2010
Eubranchus farrani from the Baltic Sea
From: Thorsten Walter, January 12, 2010
Re: Eubranchus farrani from the Mediterranean sea?
From: Dominique Horst, May 11, 2009
White Eubranchus farrani? from western Scotland
From: Jim Anderson, October 8, 2007
Eubranchus farrani from Sardinia
From: Mauro Doneddu, July 10, 2007
Eubranchus farrani from the Mediterranean sea?
From: Sylvie Grall, July 4, 2007
Eubranchus farrani from Scotland
From: Jim Anderson, June 21, 2007
Re: Eubranchus farrani from Plymouth, UK
From: Judith Oakley, August 10, 2006
Eubranchus farrani from Plymouth, UK
From: Judith Oakley, August 8, 2006
Re: Colour morphs of Eubranchus farrani from UK?
From: Jim Anderson, August 8, 2005
Colour morphs of Eubranchus farrani from UK?
From: Judith Oakley, August 5, 2005
Eubranchus farrani from the Mediterranean
From: Sylvie Grall, April 18, 2005
Eubranchus farrani from Adriatic Sea
From: Egidio Trainito, April 14, 2005
Eubranchus farrani from Holland
From: Duncan v Vliet , December 15, 2003
Re: Eubranchus farrani
From: Jim Anderson, October 15, 2003
Eubranchus farrani from Scotland
From: Jim Anderson, October 14, 2003
Re: Catriona gymnota? from Italy
From: Juan Lucas Cervera, August 12, 2003
Catriona gymnota? from Italy
From: Gennaro Ciavarella, August 8, 2003
Eubranchus farrani from Spain & France
From: Jean-Pierre Bielecki , August 1, 2003
Re: unidentified Scottish nudibranchs (2)
From: Bernard Picton, September 17, 1999