Onchidoris bilamellata (Linnaeus, 1767)

24 June, 2007.
Fast Castle, St. Abbs on the east coast.
Many single animals from 3 - 20 mm on the rock surfaces and among barnacles from 12 - 15 m. Water temperature 12° C.
Fuji 900 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