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Cnidarians look so different, but they all belong in the same phylum. Take a look as I investigate this strange group and how they ...

Jellyfish are marine animals that belong to the phylum Cnidaria. They come in various shapes and sizes and are known for their ...

Why are jellyfish important? Why do they wash up on beaches? And most crucially—can you call them “jellyfish”?! Aquarist ...

We venture into the Deep Blue to explore the most colossal ocean animals on Earth, showcasing living titans that defy the laws of ...

Watch your step if you're looking to hit the beach. You might end up with a serious sting. Jellyfish warnings have been issued by ...

Quick facts about this very large Cnidarian! The barrel jellyfish (giant barrel jellyfish, Rhizostoma pulmo, dustbin lid jellyfish, frilly ...

This jellyfish is potentially one of the largest predatory invertebrates in the world, yet has rarely been observed. Being seen only ...

Dig into why jellyfish populations have increased, and how leatherback sea turtles can help get their numbers under control.

A huge swarm of jellyfish has invaded the surfers' paradise of Australia's Gold Coast. The amount of the marine animals was so ...

Box jellyfish are cube-shaped marine animals known for having some of the most potent venom in the world, capable of causing ...

Many species of amphipods need to live upon jellyfish for at least some of their lives. ➡ Subscribe: https://on.natgeo.com/41A7tf0 ...

Did you know a jellyfish can sting you with microscopic harpoons faster than a bullet, even after it's dead? This video uncovers the ...

Imagine a creature so alien it seems impossible—brainless, boneless, heartless, yet glowing through the ocean like a living light ...

Why do so many Antarctic sea creatures grow to unbelievable sizes? From colossal squids and giant sea spiders to massive ...