An invasion of these jellyfish look-alikes has reached Texas coastlines, threatening the safety of beachgoers.

The man-o-war, a relative of the jellyfish, has the same capacity to sting on both water and land, and even a dead ...

Jamaica Beach officials warn of Portuguese man o' wars washing up on the beach. Similar sightings have been reported in southeast U.S.

Cllr Jim O’Leary, Cathaoirleach of Dun Laoghaire-Rathdown ... scientists spotted a swarm of rare jellyfish with a "painful ...