Sharks are mad at humans about global warming

'The one thing that's affecting shark attacks more than anything else is human activity,' said Dr George Burgess of Florida University, a shark expert who maintains the database. 'As the population continues to rise, so does the number of people in the water for recreation. And as long as we have an increase in human hours in the water, we will have an increase in shark bites.'

Some experts suggest that an abundance of seals has attracted high numbers of sharks, while others believe that overfishing has hit their food chain. 'I'm not saying it doesn't happen, but it's a convenient excuse,' Burgess said. Another contributory factor to the location of shark attacks could be global warming and rising sea temperatures. 'You'll find that some species will begin to appear in places they didn't in the past with some regularity,' he said.