Fjordia lineata (Loven, 1846)

15 May, 2013.
Inverkip Pier, Firth of Clyde on the west coast.
45 mm animal at 8 metres - one of many large specimens with spawn on and around these Tubularia larynx hydroids. Water temperature 8.5°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