During Discovery's Shark Week last week, they had a show where 3 divers TRIED... HARD, to get bitten by a shark, for a WEEK, but were pretty much unsuccessful. They splashed frantically on a surfboard over top of sharks, they didn't do anything. Put fish on a spear (although already dead...) and swam all around sharks and even put the fish in the sharks face.... they didn't do anything. Swam along the shoreline at dusk until the swimmer got too bored to continue, the sharks never showed up. Desperate to get a bite, they went back down with a bucket of chum again and put dead fish ON a diver, and you'd be suprised at how many sharks clearly avoided him and how long it took to get just a small nibble.
I did a bull-shark feeding dive with about 15 sharks and only 3 divers (the feeder, a dm, and myself), and I never even saw their teeth! They swam pretty slowly and they took turns taking the bait, and they did so VERY gently and in a very distinguished order - I was SHOCKED when I observed this. I admit, I signed up for the adrenaline rush, but there was no adrenaline - it had to be the most surreal and calming thing I ever witnessed.
There are divers diving with large sharks EVERY day around the world, yet we never hear any horror stories. The TV shows that show how dangerous sharks are... have a TEAM of videographers in the chummed water with them, and again, we don't hear any horror stories. And what about all the people who go down and attach tags and transmitters to them by hand?
It's important to understand and respect what they're capable of, but I believe the risks are highly mitigated if you educate yourself about them.
I say bring on the whites and leave the cages at home! I hope to have this opportunity in my lifetime!!