TRURO (CBS) – A shark sighting in Truro Tuesday is keeping swimmers out of the water at two beaches.

The Truro Recreation & Beach Department tweeted that there was a shark sighting at Head of the Meadow Beach at 11:30 a.m. That beach and the nearby Coast Guard Beach will be closed for swimming until 1:45 p.m.

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State shark biologist Greg Skomal confirmed that two sharks spotted by SkyEye off the coast of Truro were in fact great whites.

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An aerial image of a great white shark off of Truro, August 7, 2018. (WBZ-TV)

On Monday, Plymouth shut down all town beaches for three hours after a fisherman spotted a 14-foot great white shark.

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In just the last week or so there have been roughly two dozen great white sightings including close encounters with paddle boarders and fishermen.