Great white sharks forced hourlong closures Monday at four Cape Cod beaches: Newcomb Hollow and Marconi beaches in Wellfleet, Nauset Beach in Orleans, and Head of the Meadow Beach in Truro, officials said.
A tagged shark was detected at Newcomb Hollow Beach at 9:07 a.m., according to the Atlantic White Shark Conservancy’s Sharktivity app and Suzanne Thomas, a Wellfleet beach administrator. The shark “stuck around” after it was detected, so the beach was closed until 10:27 a.m., Thomas said.
Marconi Beach was shut for an hour after a shark was spotted at 10:30 a.m., Thomas said.
People onboard a boat and a plane at Nauset Beach spotted a shark three times between 12:45 and 1 p.m., said Brandon Burke, an Orleans beach director. The beach was scheduled to be closed for an hour unless another shark was seen or detected.
Head of the Meadow Beach in Truro was closed for an hour at 2:30 p.m. following a shark sighting, the town of Truro said in an alert.
These sightings bring the total number of shark closures on the Cape and Islands this August to 63, according to a Globe tally.