Pleurobranchus membranaceus (Montagu, 1815)

1999.
Known locally as the Highland Dancer after its ability to swim in the manner of its Spanish relative.
Nik 5 with 2:1 close up extension tubes and Ikelite 50 flash.

for more information about this species go to one of the links below
scottish nudibranchs Encyclopedia of Marine Life of Britain and Ireland sea slug forum