Onchidoris bilamellata (Linnaeus, 1767)

12 August, 2014.
The reef wall next to the Rondo wreck, Sound of Mull on the west coast .
Spawn seen from 25 - 30 m depth and animals between 20 - 25 metres. Huge number of these animals in a small area. Individuals between 8 - 25 mm approx length.
Water temperature 13°C.
Sony α6000  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