Well, at this point the sharks are way behind. We kill about 100 MILLION of them a year just for their fins. When sharks catch up, then we should think about doing something, until then maybe we are blaming the wrong animal. If humans had not overpopulated this planet as much as they have, then shark attacks would be even less. (think about that)
Think about the number 100 MILLION as well, every year...who are the animals?