25 January, 2015.
Ardcastle, Loch Fyne on the west coast .
6 mm animal at 16 metres. Water temperature 8°C.
Sony α6000 in Nauticam housing, 50 mm Zeiss Touit 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