Example: You can train a tiger to leap through a hoop, but if you push its limits by doing something like sticking your head in its jaws, it just might revert to instinct and bite your head off—despite the otherwise friendly behavior that allowed you to get close to it, not to mention years and years without incident.) This is why this kind of event matters, and why shark dives that involve chumming or baiting are controversial and worth debating, IMO.
Daniel, in all your scenarios, you fail to acknowledge one important thing, that many divers WANT to do this. So unless incidents like these cause people to kill the sharks (eg: the mass hysteria in Australia where they go out and hunt any shark once a GW bites someone on a popular beach), and there is protection by virtue of these activities (and by all evidence in the Bahamas, there is), then really your argument is in principle only, and has no practical application for the protection of the species.
Wise conclusion, Drew! I would absolutely second that and personally vouch PRO SHARK FEEDING for exactly that reason. In a perfect world we would not penetrate the ocean at all and leave the sea alone. But divers or avid shark tourists are the lesser evil and might unfortunately be the last chance that these animals have. Sharks time is almost up.
Andi, while I don't doubt John Bantin's information, I do wonder how much the 7 or so operators who do tiger beach etc are contributing to the protection of the sharks in the area vs Stuart Cove's and others doing the reef sharks. Are the tigers and bulls getting unmbrella protection because of the reef sharks show at Stuart Cove's operaton? Would the protection be there whether tiger dives are done or not? I'm definitely not endorsing this activity at all, especially on a regular basis, for reasons stated next.
Certainly, but have you noticed the difference in behavior in these 'slightly domesticated' sharks under both conditions where food is present or not?
Actually, my own anecdotal evidence suggests just that there are differences. For example, my experience in Okinawa with the netted whalesharks changed my perspective on constant feeding. The whalesharks go right up to divers, often physically contacting divers while looking for food, like a domestic cat or dog. In all my dives with whalesharks from Aldabra to Zanzibar, I've never had one swim up to anyone like it was begging for food.
My experiences in natural feeding vs chummed is a little different. Sharks feeding on baitballs concentrate on the fish. one or two will circle me occasionally and if I get too close to a baitball, they will take a pass at me. They'll bump the camera and me the closer I am to the baitball(some of the bumps is really me being in their way) but none have nipped at my fins. A lot of the aggression (without too much antropomorphizing) is probably defending the food source.
Compare that to bait/chum, the same blacktip species, looking for food, nip at my fins and camera, take frequent passes and bump me. There are a few major differences and many minor ones but yes, they are there to be observed. Conversely someone I respect claims he prefers chummed/fed situations more than wild natural ones for safety. However, the safe 'feeling' is not the issue.
No one can deny the fish learn quickly (ever watch aquarium fish?) and know who brings food. The association of food to human activity is there and there is no denying that. Also we have to accept that our odds of having an incident with a shark increases quite a bit once we are in a feeding environment. HOWEVER, the question is does that equate to an increase in the propensity for a shark to bite a person, specifically away from chumming activities?
I don't think anyone will deny the higher possibility of incidents due to exposure to sharks. Some species of sharks become feistier and aggressive towards divers after being habituated by chum/bait, especially sharks like the C. Limbatus (that is again not an issue that is being challenged I don't think) which are known to nip at fins and cameras during chum sessions. They also lose their fear of bigger sharks like tigers. I've had a few tiger sharks trying to take nibbles and pokes at people during chum dives. It was probably curiosity but the problem is we are too fragile to handle an investigatory nibble with dire consequences.
More anecdotal evidence? Try PNG's Milne Bay. At a particular site called Valerie's Reef (aka Silvertip Reef) where operators chum regularly, the silvertips come in calmly but act aggressively (even making several passes at divers with any EM emission like galvanic metals or batteries from cameras) once they sense food but cannot locate it easily.
Obviously, many of these instances are during a chum dive. What about when the sharks are elsewhere?
The closest parallel is the Aliwal Shoal shark dives which is done 'near' a popular dive and spearo area, as well as being close to popular beaches. There are instances of shark behavior attributed to the baiting/chumming dives. For eg, I've seen a tiger shark I'd seen on a tiger dive approach my group of normal divers, and heard stories of spearos being approached even before they shoot anything on the shoal. Now is that sufficient to draw a conclusion? Definitely not. However, the general consensus is that people like to play it safe (again noting the Australian GW example)
As the human population encroach more and more into the ocean, it's inevitable that there'll be some sort of negative interaction. The shores of Florida prove that point. Michelle Kozinski of the Today Show notes that shark attacks have risen around Florida "the last century", erroneously forgetting that population of Florida grew about 2000% in the last century as well, not to mention the exponential increase in tourism, mostly concentrated along the beaches. Anyone with basic logic can see the correlation. Unfortunately (and irresponsibly), she could not or chose not to report it.
Most surfers understand and accept the dangers of mistaken identity incidents by sharks. Spearos obviously knowingly take the risk and many also carry powerheads to defend themselves. It is however very difficult to imbibe that understanding to the beach bather. Comparisons with the risks of driving on the highway bounces off, because driving is considered an essential part of life and the dangers acceptable. Swimming at the beach is considered part of a holiday and a different outlook takes over. And it really comes down to outlook.
As a photographer's website, I think many here will be on the side of continuing such dives and will willingly accept the risks involved. Unfortunately, there is a bigger picture involving the public and their perceptions, which isn't likely to change all that quickly as logic tends to give way to hysteria. For whatever reasons each party has (photographers, fishermen, operators etc), it is vitally important that we do not lose sight of doing what is right for the preservation of the species.