SWFSC Scientists Prepare New Fact Sheet on Thresher Sharks


 Common thresher shark with satellite tag SWFSC scientists have prepared a downloadable fact sheet on thresher sharks and their fisheries.  The common thresher shark is the most important commercial shark species in the U.S. west coast highly migratory species fisheries. Threshers are caught primarily in the California-based drift gillnet (DGN) fishery that was first established west coast-wide to target thresher sharks in the late 1970s. By the mid 1980s the fishery had shifted its focus to more lucrative swordfish.  The shift was the result of both economics and regulations to protect pupping female thresher sharks (PFMC 2003).  Since that time, threshers have only occasionally been targeted secondarily or caught incidentally in the DGN fishery. For more information visit the common thresher shark page of the Highly Migratory Species Program.