Dendronotus lacteus (Thompson, 1840)

11 August, 2014.
The Hispania wreck, Sound of Mull on the west coast .
20 mm specimen among weed at 18 metres.
Water temperature 13°C.
Sony α6000  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
sea slug forum