Experts say when sharks are fed by hand, they learn to associate humans with food and this may be the reason for the rise in shark attacks.
There have been 39 attacks in 2001 already, including one in July when a shark ripped the arm off a 9-year-old boy as he swam.
No evidence
The wildlife commission investigated the experts' claims and agreed that the tourists affected their behaviour.
But it said there was no real evidence that this was the cause of more shark attacks.
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