The cold weather isnt the only thing keeping South Florida swimmers out of the Atlantic Ocean. This week thousands of blacktip and spinner sharks were filmed .\r
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Shark sightings video: Thousands of sharks spotted migrating off Florida coast.\r
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WPTV in Florida reports beaches in the Palm Beach area are closed, because thousands of sharks are swimming off the coast. NOTE: Video is silent. (March 6)\r
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Migrating sharks, right off the Breakers Hotel.