Nautilus, Nautilus pompilius     (Family Nautilidae)

Location: North Horn, Osprey Reef, Coral Sea, Australia

Equipment: Nikon D70 with Nikkor ED 18-70mm f/3.5-4.5G IF in Ikelite housing and Ikelite DS50 & Ikelite DS125

Settings: @ 34mm, ISO200, 1/160s, f/16