Volusia County's Beach Safety Ocean Rescue reported 406 jellyfish stings on Saturday and Sunday.
Capt. Tammy Marris says purple flags were placed on the beach to warn beachgoers about the jellyfish.
Beach safety officials said they aren’t typical-looking jellyfish.
“They’re clear except for one little spot of color in the middle,” said Capt. Ray Manchester, with Volusia County Beach Safety.
Officials are still trying to identify the tiny species. Beachgoer Crystal Eaves posted a picture of one of the jellyfish after getting stung along Daytona Beach.
The Daytona Beach News-Journal reports lifeguards also performed 14 ocean rescues on Sunday. Surf conditions were moderate, but officials expect conditions to become rougher as Tropical Storm Cristobal passes offshore in the Atlantic.