Why was 2015 a record year for shark attacks?

Last year brought 98 shark attacks worldwide, a record that edged out 2000, which saw 88. The U.S. led the way with 59 attacks, 30 of which occurred in Florida, followed by Australia with 18 and South Africa with eight. Of all the attacks, only six were fatal.

Scientists guess that an increased number of shark attacks might be the result of rising water temperatures caused by climate change, which leads sharks to venture further north and south than usual. And last year’s El Nino, a warm weather system, drew more people to the beach.

Death from shark attack is rare, according to the International Shark Attack File, which states that more people die from lightning, bike accidents and bear attacks.