Eubranchus exiguus (Alder & Hancock, 1849)

8 April, 2006.
Sgeir Mhor, Island of Skye on the west coast. Collected from the kelp at 8 metres in 7° C water. This 3 mm animal was photographed later in the lab.
Fuji 810 camera in Ikelite housing, 2 x Inon D-2000 flashes and 2 x CU lens.