Scientists have captured video of a terrifying species of cannibal jellyfish that they call a "gelatinous predator." The intriguing creature has never been seen before, but researchers found it ...

Jellyfish are carnivores, so their diet mainly consists of other animals. This includes zooplankton, small crustaceans, small fish and other jellyfish, according to Oceana, an ocean conservation ...

Good question! As climate change continues to affect the ocean, the number of jellyfish is expected to increase in some regions and decrease in others. Warmer waters often favor jellyfish growth, but ...

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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 ...

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 ...

Immortal jellyfish (Turritopsis dohrnii) are smaller than the nail on your pinky finger. Ian Gavan / Getty Images In oceans across the globe, a tiny jellyfish species—smaller than the nail on your ...

Glinting in the early morning sun, the dinner-plate-size reddish-brown jellyfish were scattered across the beach, draped over oyster-dotted rocks, squeezed into cracks in boulders, and splayed out ...

At the time of this writing, the video (archived) had received more than 124,000 views. While we were unable to determine the creator of the video, it did not show a real jellyfish and was likely ...