CNN Erin Burnett OutFront March 8, 2013 04:21:00
Clear waters off florida's treasure coast. lifeguard has had to close several beaches to keep people out of the water, and even at the beaches that weren't closed. >> i want to stay by the shore, definitely. >> people are taking extra precautions. >> it's kind of scary, even with the kids, sharks. we don't come to florida often. >> it happens every year, shark run, and us surfers really know about it, because it's the time of year that we stay out of the water. >> reporter: it's a school of mostly black-tipped reef sharks and spinner sharks is making their way north as the ocean warms for the ...