Hundreds of dead puffer fish wash up on a Pilbara beach, as an epic red-bell jellyfish bloom put the region's ports authority on alert.

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 ...

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

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 ...

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 ...

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 – You may have heard about the recent sightings of freshwater jellyfish in Lake Erie and wondered (a) is this a bad thing? And (b) what would it take to see one? The answer to the ...

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