Antiopella cristata (delle Chiaje, 1841)

27 July, 2001.
The cliff below the West Pier at Lochaline on the west coast. 
Water temperature 13°. C at 20 metres. This 'portrait' of a 40 mm animal was all that would fit into the frame.
Nikonos 5 with 2:1 close up extension tubes and Ikelite 50 flash.

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

 nudibranchs of the british isles sea slug forum