The Atlantic White Shark Conservancy tweeted a video Saturday night of a shark attacking a gray seal off Nauset Beach.
A beachgoer submitted the video, reportedly taken at 5:30 p.m. Friday at Pochet, which is south of the Nauset Beach parking lot on Cape Cod, according to the tweet. The approximately two-minute video shows a shark thrashing back and forth and a pool of blood near the shore.
Editor’s warning: Video contains graphic footage.
There have been multiple shark sightings on Nauset Beach this month, according to a running Globe tally.