It's summer time when people in the New york and Philadelphia areas always flock to the Jersey shore for some fun in the sun. But this year at some beaches, it may not be wise to go into the water.

FOX's Gary Baumgarten has more: 

What's keeping people like Emily Sgro of Monmouth Beach N.J. on the shore?: 

(Sgro) "I do not want to go directly into the water for the rest of the summer."

Clinging jellyfish, found not only in the ocean, but in some rivers that lead to the Atlantic, too. It's a bit odd because well, they're usually found in the Pacific Ocean.

But they're multiplying in New Jersey. They are known to carry a very painful sting that can lead to severe health problems including kidney failure.

One person has already wound up in a hospital after he was stung earlier this month. Scientist are currently trying to figure out how fast they're spreading in the area.

Gary Baumgarten, FOX News.

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