Great seahorse, Hippocampus kelloggi     (Family Syngnathidae)

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

Depth: 13.3 m

Equipment: Nikon D7000 with Micro-Nikkor 60mm f/2.8D in Ikelite housing and 2 x Ikelite DS161

Settings: ISO200, 1/200s, f/16