Eubranchus pallidus (Alder & Hancock, 1842)

21 June , 2009.
Weasel Loch, Eyemouth on the east coast. 
A 15 mm animal at 12 m. Water temperature 10.5°C.
Fuji E900 in Ikelite housing, 2 x Inon CU lenses and 2 x Inon D-2000 flashes.