Antiopella cristata (delle Chiaje, 1841)

6 July, 2008.
Skelly's Holes, St Abbs on the east coast. 
These animals were found all through the dive, between 4 - 14 m, in sizes from 15 mm up to this 50 mm specimen.
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