Edmundsella pedata (Montagu, 1815)

12 April, 2003.
East coast of Hyskeir Island on the west coast. 
Water temperature 10° C. At 15 metres, a 40 mm animal one of several seen during the dive.
Nikon 90SX with 105mm lens in Subal housing and housed SB26 flash.

for more information about this species go to one of the links below
OPK - Opistobranquis nudibranchs of the british isles sea slug forum