Coryphella lineata (Loven, 1846)

18 April, 2014.
Inverkip Pier, Firth of Clyde on the west coast.
35 mm animal at 8 metres - one of several large specimens with spawn. Water temperature 8°C.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +10 dioptre 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