Amphorina farrani (Alder & Hancock, 1844)

August 1995.
Seacliff near Dunbar on the east coast.
The larger specimen is approx. 16mm long. This is one of the 4 morphs Picton and Morrow describe.

for more information about this species go to one of the links below
OPK - Opistobranquis

 nudibranchs of the british isles sea slug forum