Watch the moment a hammerhead shark snatches a fish that was hooked by anglers in Bahia Honda, Florida. Footage shows a boat with fishermen trying to haul a freshly caught tarpon fish when the shark emerges in front of the vessel. The men are seen leaning down to the side in a bid to salvage the tarpon but are unsuccessful. New research by biologists at the University of Massachusetts Amherst demonstrates that 15.3% of tarpon hooked by anglers were preyed upon while still on the line.