Several beaches along South Florida's Atlantic coast line were closed after thousands of sharks were seen migrating in the waters.
The sharks were migrating from Boca Raton to Jupiter since the beginning of March, marine biologists told NBC Miami.
Biologists said the sharks are going north after migrating to the south for the winter.
Lifeguards at Midtown Beach saw spinner sharks in the waters and put up red flags to tell beachgoers they couldn't enter the water.
"It's dangerous. It's not what you would expect. Families come out here to enjoy the weather, beach, and sand, but now they can't.They have to travel a little bit further than they should," said beachgoer Guirlene Exantus.
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