As summer temperatures rise and more people flock to the beaches, sightings of jellyfish—especially the purple jellyfish—are ...

Dive into the world of the ocean’s most feared creatures as we reveal the five most dangerous jellyfish on Earth from the nearly invisible Irukandji to the infamous box jellyfish. Learn what makes ...

The beaches around a popular English seaside destination are being overrun with vast numbers of moon jellyfish.

A massive jellyfish with tentacles stretching more than 100 feet washed ashore a Maine beach last weekend — with swimmers and ...

A rapid surge in purple jellyfish (Pelagia noctiluca) sightings is unfolding across several Greek coastal regions, sparking renewed warnings from marine experts and environmental authorities. The ...

Unlike typical jellyfish with large bells, Narcomedusae have flattened umbrella-like bodies with tentacles that extend from the edges which gives them an alien appearance. These deep-sea dwellers are ...

This jellyfish species, reaching up to 7 inches in diameter, is identifiable by its visible stomach and gonads. The many-ribbed jellyfish uses bioluminescence as a defense mechanism against predators.

In recent years, human activities like overfishing are thought to have contributed to a rise in the lion's mane jellyfish population, as fewer predators are available to keep their numbers in check.

1. Box Jellyfish (Sea Wasp) The Australian box jellyfish, also known as the sea wasp, tops the list as the most dangerous jellyfish in the world. Found in the waters around northern Australia and ...

1. Box Jellyfish (Sea Wasp) The Australian box jellyfish, also known as the sea wasp, tops the list as the most dangerous jellyfish in the world. Found in the waters around northern Australia and ...