It was a freak encounter that broke all the records. In 2012, off the coast of Florida, shark scientist Dr. Neil Hammerschlag caught the mother of all bull sharks—it stretched more than ten-feet long and weighed over 1,000 pounds! They named her Big Bull and set her free. Bull sharks in Florida patrol the beaches, terrifyingly close the swimmers, and feast on seasonal migrations of bait fish. Many long thought these sharks were just well fed. But now some scientists believe that Big Bull is the matriarch of a unique population of giants. There is only one way to find out...and you gotta get close.