There is so much controversy with shark diving I just had to jump in. First chumming is not feeding. Feeding is actually giving pieces of fish to the sharks from stick or by hand. Having a chum slick in the water is just oils and particles. I've been on both non-feed/chum, plain chumming dives and chum/feed dives. I would never recommend a feed dive because someone invariably does something "stupid" without thinking and puts everyone in a bad situation. Most feeds are not enough to sustain the sharks and they get their food the natural way, feeds are meant to be a snack not a meal. The reason that most of us don't swim without cages with whites is that whites view us as potential food source. We look like seals-in our wet suit, we blow air bubbles out and we are the correct size. With tigers, bulls, reefs, lemons we don't look like their food. With careful training and comprehension of the dive you can safely dive without cages with them. There are many behaviors that humans can exhibit in the water that will keep you safer. There are several people out there who dive with whites with no cages. Again it's our behavior and limitations that may be an issue with all sharks-don't stay on the surface (well we have to get back in the boat!), don't giant stride in-slip in quietly, don't flop around or make quick movements, don't get in the middle of the chum slick, don't grab a piece of food if it floats near you, don't breath like you're scared, keep your heartrate calm, don't chase or crowd the sharks-even the small lemons-nobody likes to be chased and crowded - even people, don't push your camera in their snout when they come check you out. If they get close don't smack them with anything (stick, ect), respect the animals. If you're overly scared do not get in the water with sharks. Most know, like a dog, when you are afraid and that puts them on the defensive. You don't want a 14' tiger shark cranky! Cageless diving can be as safe as you make it, listen, get training, go with someone reputible, have good diving skills first, respect the ocean. The last thing we need to do is show sharks in a bad light. Rant done.