Coryphella verrucosa (M. Sars, 1829)

March 2000.
Finnart Pier, Loch Long on the west coast.
This pair were among a large number egg laying in their clock spring spirals. They were found during a day dive between 12 and 18 metres on several of the pier legs.

for more information about this species go to one of the links below
scottish nudibranchs

 nudibranchs of the british isles sea slug forum