Antiopella cristata (delle Chiaje, 1841)

17 June, 2014.
Ardnoe Point, Sound of Jura on the west coast. 
2 animals found on the dive. The first at 25 m and this specimen at 15 m were approx. 60mm long. Water temperature 11°C.
Sony NEX-5 in Nauticam housing, 18-55mm lens and 2 x Inon D-2000 flashes.

for more information about this species go to one of the links below
OPK - Opistobranquis nudibranchs of the british isles sea slug forum