Betty and I were swimming over to a little wreck  when this green turtle swam up behind us and beeped for the passing lane. When we didn't pull over fast enough, he went around on the right.  It was a great photographic opportunity, but all I had was a 105. What's the old saying? "If all you have are lemons, make a portrait."

Nikon D100, 105mm f/2.8 AF Auto Micro Nikkor, Subal D-10 Housing, 2 Sea and Sea 90 strobes, f/18, ISO 200.