A "nightclubbing" jellyfish rarely spotted on British coastlines have been appearing in vast numbers along Welsh beaches.

A penny-sized jellyfish has been spotted in the western part of Lake Erie as well as in western Pennsylvania. The stinging cells of these freshwater jellyfish can't pierce human skin. The non-native ...

NEW JERSEY (WABC) -- Jersey shore visitors are used to seeing small, clear jellyfish as they dip their toes in the water. But recently, larger pinkish-purple jellyfish have been turning up at the ...

Some beaches are littered with unusual jellies that 'pack a powerful punch'. Swimmers have been sharing horror stories ...

A researcher is trying to solve a marine mystery in the waters off Cape Cod — why a particular jellyfish, not known for stinging people, has been stinging swimmers in recent years. Using protective ...

CLEVELAND, Ohio -- Rare freshwater jellyfish have been spotted in Lake Erie, causing curiosity among residents. Now, there’s a guaranteed way to see them firsthand. These rare creatures, native to ...

British beachgoershave been issued a warningafter a number of Portuguese man o' war washed up the UK coast. A number of the ...

No brain, no problem. Despite their simplistic make-up, jellyfish use a decentralized system to navigate their environments. Read more.