Swarms of giant lion’s mane jellyfish whose tentacles can stretch 120 feet and unleash painful stings even 25 days after they ...

"We are already seeing more than we normally see in summer," said Owen Nichols, director of Marine Fisheries Research ...

The species is native to waters off the New England coast, but weather and ocean patterns usually keep them farther from ...

Unusually large numbers of lion's mane jellyfish are being reported across Cape Cod and the South Shore. The sting from a lion's mane jellyfish can be painful but is not considered deadly. Researchers ...

Even if most stings are not considered life-threatening, serious reactions can still happen.

Officials say warm water and winds likely pushed the jellyfish into shallow waters Thousands of lion’s mane jellyfish have washed ashore across Port Phillip Bay in Melbourne, Australia Authorities are ...

Jellyfish have returned to the waters off the Massachusetts coast. It happens every summer, but on the North Shore at least ...

Officials in the New England area are issuing a warning after a large number of lion's mane jellyfish were spotted on the coast. The lion's mane jellyfish is one of the largest known species of ...

The jellyfish can grow to be several feet across and are considered the largest jellyfish species in the world.

When underwater archaeologist Brandon Clifford recently arrived at the Whydah Galley excavation site off Wellfleet, it wasn't the 18th-century pirate ship wreckage below that had his attention first.