A great white shark was filmed from a drone cruising the waters of Cape Cod on Wednesday, a couple of hours before a man was attacked in the same area.
The shark was filmed at around 2 pm local time off Truro, close to several swimmers.
The 61-year-old man was standing in the water 30 yards off the same stretch of coastline when the shark bit him at around 415pm local time.
After the bite, he was treated by local emergency service personnel on the beach before getting transported by helicopter to Tufts Medical Center in Boston.
The shark caused deep puncture wounds to his torso and leg.
The species of shark has yet to be identified.
