Cuthonella concinna (Alder & Hancock, 1843)

17 June, 2014.
Sgeirean Dubha, the Garvellachs on the west coast. 
2 x 10 mm animals with spawn 14 m. Water temperature 11°C.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +10 dioptre and 2 x Inon D-2000 flashes.

for more information about this species go to one of the links below
Nudibranchs of the British Isles Sea Slug Forum