Facelina bostoniensis (Couthouy, 1838)

6 July, 2008.
Skelly's Holes, St Abbs on the east coast. 
This 45 mm specimen was found at 14 m .
Water temperature 11° C.
Fuji E900 camera in Ikelite housing, 2 x Inon D-2000 flashes and Inon CU lens.

for more information about this species go to one of the links below
OPK - Opistobranquis

 nudibranchs of the british isles sea slug forum