Philine quadripartita Ascanius, 1772

2 August, 2016.
Loch Eishart, Skye on the west coast .
40 mm animal, one of many, at 17 metres.
Water temperature 12°C.
Sony α6000  in Nauticam housing, 50 mm Zeiss lens and 2 x Inon D-2000 flashes.

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