When the bottom-dwelling worms of Denmark’s fjords rise up in summer to spawn, they are predated by the resident jellyfish.

Researchers filmed the elusive Stygiomedusa gigantea nearly 3,000 feet below the surface off Argentina’s coast. This “phantom ...

This rare jellyfish has only been seen two times. But is it even the same species? We recount the Chirodectes maculatus mystery ...

A sea creature with long tentacles and a painful venom has been spotted on shores from Pawleys Island to Myrtle Beach. The Portuguese man o’ war is a jellyfish-like animal that often looks like a ...

They have no brains, no spine, no heart. And they’re not politicians. They are jellyfish. And they’ve been around for over ...

Most people think the great white shark is the ocean predator they should fear the most. However, this type of jellyfish, statistically speaking, is much deadlier. Sharks are probably the animal that ...

Experience the mesmerizing and ethereal world of the jellyfish with this captivating close-up video. The footage provides an intimate view of the animal's translucent, gelatinous body, highlighting ...

Do you know! The world’s longest jellyfish has neither a brain nor bones. Yes, this is true, according to a recent publication in the scientific journal Frontiers in Marine Science, the Lion's Mane ...

An underwater videographer has just published mesmerizing footage of the world’s largest, longest, and heaviest known jellyfish species—a lion’s mane jelly. “Several minutes into the dive, I noticed a ...

The animal kingdom is full of amazing creatures, but some of them have developed venom to hunt or defend themselves. Venom is ...