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.
Doctors at St. Mary's Medical Center in West Palm Beach told WPTV that they see about five to six shark bite victims annually. These bites are usually minor, but can put the victim at risk for infections.
Swimmers are advised to swim close at beaches with lifeguards and take jewelry off before getting in the water as experts say sharks are attracted to silver, yellow and gold.
Tourist Tori Bradshaw just arrived in South Florida from her home state of Washington.
"Well, we don't have sharks in Washington," she said "I really wanted to go swimming."
"If there are sharks, you aren't going to find me in there. Only in Las Vegas," said Burt Abrams, visiting from Cleveland, Ohio.
They've actually enjoyed being in the water on the their vacation and were surprised to hear they may have not been swimming alone.
"The water has been beautiful. It's been warm. I don't think they come in this shallow, but I'm not going to test it," Bernice Abrams said.
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