PADI, a diving organization that certifies novice and advanced divers, suggests going with experts, such as local dive operators who know shark behavior in the area. It is suggested you go as a group in the daytime, since solo divers in low visibility are more at risk in sharks' waters.
Since sharks like to eat food on the surface and in mid-water, it is suggested you enter the water quietly and descend quickly. Be aware: If you notice fish swimming erratically, sharks might be near.
Always, always look behind you, Douglas adds. "You want to be spacially aware at all times. Never ever give a shark your back, especially with big tiger sharks. They're curious. They'll want to sneak in behind you and come right on you."
As people's affection for sharks has increased, they've forgotten how fierce these animals are. Never lose sight of the fact these animals are predators, he says.
But most important of all, when it comes to non-caged diving, one rule is king: Respect the shark.
"Always respect," Douglas says. "The mistakes, if there are any, will happen on the human side, not the shark side. That's one thing we really drill. Respect the power, respect the size. A 16-foot white shark deserves our respect."