Sensors will be dropped into the Atlantic Ocean off northeast Florida to help researchers track great white sharks.
Shark experts at the University of North Florida will be alerted whenever a great white shark that's been tagged with a tracking device swims within a few hundred yards of one of the sensors.
Researchers say the devices will be placed on buoys within a mile from shore.
Last year, scientists tracked a 16 1/2-foot great white near shore off Jacksonville Beach. A 14-foot great white was caught and tagged within sight of an Atlantic Beach park.
Researchers say data from the tracking devices show that some great white sharks spend more time close to shore than they previously believed.