http://www.slate.com/articles/health_an ... ocean.html4. Sharks aren’t a threat to you, they’re important, and they’re in troubleThe average American has only a
1 in 3,800,000 chance of being killed by a shark. You’re
more likely to be killed by a lawnmower or a vending machine, and more likely to be bitten by a stranger on the subway. Like all predators, sharks help keep the ocean in balance by eating the sick, the weak, and the dying. However, sharks are suffering from overfishing more than most marine species, with 1 in 6 species of shark, skate, or ray (and 1 in 3 species of open ocean shark) considered “Threatened with Extinction” by the IUCN Red List.