Several sharks were spotted off Cape Cod, temporarily closing a beach to swimmers Thursday afternoon, according to Truro police.
The sharks were spotted off Longnook Beach in Truro just before 1 p.m. by a state police air wing helicopter, prompting authorities to close the beach to swimmers for about an hour.
The beach has since been reopened.
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Aerial video of the sharks was shared by Massachusetts State Police.
The sighting is the third one off the coast of Massachusetts in as many days.
Newcomb Hollow Beach in Wellfleet was temporarily closed to swimming on both Tuesday and Wednesday afternoons after a shark was spotted just yards off shore, police said.
South Beach in Edgartown on Martha's Vineyard was also closed for a time Tuesday due to a shark sighting.
Also Thusday, a shark was likely spotted at Goose Rocks Beach in Kennebunkport, Maine, according to police there. They urged that beachgoers "maintain awareness while in and around the water."
More than 150 great white sharks have been spotted off Cape Cod this summer, according to the Atlantic White Shark Conservancy's Sharktivity app.