i think that's got my pulse up a little, that music. >> i know. most fishermen exaggerate the size of their catches. not the guy you're about to meet. >> he reeled in what he believes to be a record-setting mako shark, then tried to keep it a secret. someone snapped a photo when he stopped for gas and social media took over from there. abc's sar i hanes has details. >> reporter: an incredible catch of this enormous 11-foot, 800-pound shark on the gulf coast of florida. the shark still flapping its fins up on the shore when the fearless fisherman jumped right in. joey polk, who has been fishing since he was a little kid, could not let such a prize go, deciding to get the rope and take him in. >> it's probably the best feeling you've ever felt in your whole life, a thousand times over. it's unexplainable.