Nudibranch, Glossodoris atromarginata     (Family Chromodoridae)

Location: Bare Island, La Perouse, New South Wales, Australia

Depth: 7.3 m

Equipment: Nikon D300 with Micro-Nikkor 60mm f/2.8D in Ikelite housing and 2 x Ikelite DS125

Settings: ISO200, 1/160s, f/22