Polycera quadrilineata (Müller, 1776)

9 September, 2007
Greenends Gully, Eyemouth on the east coast.
A pair of 18 mm animals with spawn at 4 metres. Water temperature 14° C.
Fuji E900 camera in Ikelite housing, 2 x Inon D-2000 flashes and 2 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