They range from the highly venomous Irukandji jellyfish to the giant lion’s mane jellyfish, ... The Atlantic sea nettle is one of the most common and well known jellyfish along the U.S. East ...

LONGBOAT KEY, Fla. -- If you are planning to go Tampa Bay-area beaches soon, you may want to reconsider taking a dip as thousands of Atlantic Sea Nettle Jellyfish are now swarming local waters.

Atlantic sea nettles are found along the U.S. East Coast, from Cape Cod in Massachusetts to the Caribbean and Gulf of Mexico, according to the Aquarium of the Pacific in Long Beach, California.