But the lion’s mane jelly isn’t just a certified Long Boi; according to Guinness World Records, it’s also the heaviest ...

Vinegar has been another popular remedy for jellyfish stings. In many cases, it can deactivate venomous cells that haven’t ...

One ocean-dwelling creature found in many tropic waters is known to be able to reserve its own life cycle, cheating death.

This jellyfish is very small in size. Its height and width are about 4.5 millimeters, which is less than the size of a little ...

Meet the giant phantom jellyfish. It's over a metre (3ft) wide and has four ribbony arms that trail behind for up to 10 ...

Marine scientists document new records of venomous box jellyfish in the Philippines, aiding biodiversity and venom research.

Under the waves in the English Channel over the weekend, the biologist Lizzie Daly came face-to-face with an enormous underwater denizen: a 5-foot-long barrel jellyfish. Daly was diving near Cornwall, ...

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 ...

Jellyfish are far more smart than previously thought - and could teach us much about the human brain, a new study has revealed. Researchers in the Current Biology journal found the poisonous Caribbean ...

In the mangrove swamps of Puerto Rico, four eyes are permanently fixed on the sky. These eyes are surprisingly similar to yours. They’re assembled using the same genetic building blocks, and they have ...

Beachgoers on the Texas Gulf Coast are finding large, white-spotted jellyfish strewn across the sand, some as wide as 20 ...