This fellow was swimming slowly toward me. I was swimming toward him! A 'Reef Shark', C.perezii.
This is along the drop off in Cane Bay, about 110 feet deep, 33 meters. I guess the fish was about six to seven feet long, two meters. From these photos, I identified him/her in Paul Humann's Reef Fish Identification book.
.He turned almost immediately when I saw him.
This is about the fifth shark I've seen here, in twenty years, and hundreds of dives. Every single time, when I've spotted them, they immediately turned and swam off into the Deep Blue. There aren't very many sharks anymore.