Doto pinnatifida (Montagu, 1804)

24 July, 2009
Pennygowan Quarry, Sound of Mull on the west coast. 
25 mm animal at 18 metres on hydroid. Water temperature 13 °C.
Fuji E900 in Ikelite housing with 2 x Inon CU lenses 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