Fishermen have caught two bull sharks at the mouth of the Potomac River in Maryland about 200 yards from a spot where people had been swimming.

John "Willy" Dean caught the 8-foot, male sharks weighing about 220 pounds each in nets on Tuesday near Point Lookout State Park where the Potomac meets Chesapeake Bay. The catch comes three years after Dean captured the first bull shark recorded in the Potomac in 37 years.

The first shark had drowned while caught in the net. The second was alive and thrashing when hauled on board by Dean and three other fishermen.

A National Oceanic and Atmospheric Administration fact sheet says bull sharks live off the Atlantic coast and are common in lagoons, bays and river mouths. They can be found where fresh water meets salt water.