In this cool video, a drone hones in on a great white shark swimming within a short distance of a bustling beach in Massachusetts.
Brendan Buckley, who was operating the drone, was casually scouting the shoreline about 60 feet off the shore when he spotted the shark.
After he showed the footage to the life guards on duty, they shut down the beach for two hours. A seal had been killed by a shark nearby only days before, and they didn't want to take any chances with the busy summertime crowd.
The video is a sobering close-up of the most fearsome shark species casually lurking just beyond dozens of swimmers.