One day, when I got in the water, I dipped my head below the surface and saw a large barracuda idling a few feet away in murky water. Gathering myself, I took a few photos, none of which turned out.

When the barracuda swam away, I tried to follow, but didn’t see it again. Instead, this green turtle slid by not two feet away. It pottered among the rocks, then came back out, passing me almost as close as before. I followed at a discreet distance, before it eased into the ruins of an old pier. I love seeing turtles in the water – they’re so graceful. First time I’ve had my camera with me.

In my attempts to identify what I see in the water, I use John P. Hoover’s book The Ultimate Guide to Hawaiian Reef Fishes, Sea Turtles, Dolphins, Whales, and Seals. His website is hawaiisfishes.com.