I don't see much in the way of especially hazardous wildlife, at least not many that you need safety tips for. If you check where you place your hands on the reef (not that you should be touching the reef to begin with), scorpionfish aren't an issue. If you don't molest them, stingrays are easy. The "sharks in caves" are probably whitetips, which are harmless, as are the nurse sharks. The Ocean Center tank has a tiger shark, gray reef sharks, sandbars, and hammerheads, but I believe you are already in the water with safety divers at the time. In an open ocean environment, there are a few tips that are best learned from experience (for example, I wouldn't want to swim away from a large, hungry, aggressive tiger-the animals at Maui Ocean Center are small and rather well fed). Work your way up before filming tiger shark evasive maneuvering. Otherwise, I'd worry more about harming the seahorses, salmon, manatees, and manta rays.
