Duvaucelia lineata (Alder & Hancock, 1848)

12 August , 2007.
Bogha ant Sagart, Firth of Lorne on the west coast. 
10mm animal at 12 m. Water temperature 13C.
Fuji E900 in Ikelite housing with 2 x Inon D-2000 flashes and 3 x Inon CU lenses.

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