A cave runs the whole way through Fish Rock, making it possible for adventurous divers to swim right through the island. On one dive I interrupted this Turtle feeding on sponges in the dark. The Turtle looked up for a moment and paused, before going back to having its lunch.
Cave at Fish Rock, South West Rocks, New South Wales
Nikon D80, 10.5mm, 1/80, f9, Ikelite housing and twin DS125 strobesby Justin Gilligan, New South Wales