For Caribbean box jellyfish, learning is literally a no-brainer. In a new experiment, these animals learned to spot and avoid obstacles despite having no central brain, researchers report September 22 ...

They’re massive, mesmerizing—and still sting after death: What beachgoers should know about lion’s mane jellyfish.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. An unusual jellyfish species found in the eastern Pacific Ocean ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Despite lacking blood, a heart, or a brain, slimy jellyfish are one ...

There’s evidence to suggest that the comb jellyfish was the first animal to appear on Earth some 700 million years ago.

The specimens are evidence of how little the squishy, tentacled predators have changed over the history of life on Earth. By Jack Tamisiea Jellyfish have been floating through Earth’s oceans seemingly ...