Onchidoris muricata (Müller, 1776)

13 April, 2003.
Godag Reef off the island of Muck on the west coast.
Water temperature 9° C. At 18 metres one of several animals observed on the bryazoan covered rocky reef.
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

nudibranchs of the british isles sea slug forum