The new species of Irukandji jellyfish sparks particular scientific interest because it has no tentacles.

Last year’s record numbers expected to be repeated

When jellyfish die and sink to the bottom of the ocean, organic carbon is sequestered in deep water layers or in sediments.

No robust evidence for a global increase in jellyfish over the past two centuries.

Rapid administration of zinc could be life saving in human sting victims.

Evolution of vision traced back 700 million years to jellyfish

Crown jellyfishes are distinguished from other jellyfish by the presence of a deep groove running around the umbrella, giving them the crown shape from which they take their name.

Box jellyfish are active swimmers with a strong directional sense, able of performing rapid u-turns and moving in between objects. How do they do it?

ooming jellyfish populations have become a real nuisance in many parts of the world as masses of the gooey creature are infesting waters, clogging ports and washing up on beaches in the Mediterranean, Japan and Australia. So what to do about it?

Explore the magical world of jellies -- graceful, dancing drifters that pulse and glow, flash colorful lights and often pack a powerful sting -- in the Monterey Bay Aquarium's exhibit "The Jellies Experience."