This guy was kind enough to confront me. Most of the time they swim away. And I am very good at getting a good bye shot. But if you swim enough dives, once in a while a grouper will turn on you. Then you take your shot. I have come to appreciate how rare that is. What I wonder is about the other heavy duty photographers. They are rarely chasing down fish on the move. It seems that a fast moving subject is not any fun. Well there were the barracuda.. but mostly they stick to the non moving subjects. I still like to swim around and chase. Of course a little chasing around keeps you warm too.