Dendronotus frondosus (Ascanius, 1774)

7 April, 2018.
Rubh Ruadh, Loch Hourne on the west coast .
35 mm animal at 18 metres
Water temperature 5°C.
Sony α6000  in Nauticam housing, Zeiss 50 mm macro lens and 2 x Inon D-2000 flashes.
for more information about this species go to one of the links below
OPK - Opistobranquis nudibranchs of the british isles sea slug forum