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

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

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

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

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 ...

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

We owe much of our understanding of how memory works in the brain to an unassuming sea slug called Aplysia californicus. It’s about a foot long, reddish brown, and has been favored by scientists since ...

Jellyfish: Jellyfish and sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. Jellyfish ...

Did you know that there are jellyfish living throughout the Hoosier State? Indiana DNR officials recently spoke more in depth about the freshwater creatures. “Wait… Indiana has armadillos AND ...

Jellyfish are thought to pre-date the dinosaurs by millions of years. Thousands of jellyfish have been launched into space for experiments. Here are 12 things you probably didn't know about these ...

Jellyfish have been around for at least 500 million years — they're older than dinosaurs and even trees. Science writer Juli Berwald calls them "ghosts from the true garden of Eden". "An intelligence ...