Three beaches on Cape Cod were closed to swimming Friday after as many as six great white sharks were spotted feeding on a whale carcass.

The carcass later washed up near Noons Landing in North Truro. Noons Landing, Beach Point and Cold Storage beaches were declared off limits to swimmers.

The dead whale was spotted Wednesday morning floating in Cape Cod Bay off North Truro. The sharks were also seen Thursday about four miles from Pamet Harbor, according to the town of Truro.

The Center for Coastal Studies captured video of sharks feeding on the minke whale carcass on Thursday.

The 11-foot long female whale was floating belly up. There were no outward signs of the cause of death.

The town urges patrons of bayside beaches to remain vigilant and report any shark sightings to Truro police.

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