There were 71 attacks in 2007 . Sharks attacked Four people worldwide in last year , Gainesville researcher reports . Four people killed by sharks 2008 . Economic downturn means fewer people hitting beaches , researcher says . Surfers account for 36 percent of shark attacks .
Sharks attacked Four people worldwide in last year , Gainesville researcher reports . Four people killed by sharks 2008 . Economic downturn means fewer people hitting beaches , researcher says . Surfers account for 36 percent of shark attacks .