Barbed-wire jellyfish (Apolemia uvaria) have invaded two Scottish fish farms, killing nearly 200,000 salmon.

Trapped in densely packed pens, the salmon are unable to escape the relentless stings, leaving them with gaping wounds and ...

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Though they do not have the long, dangerous tentacles of other jellyfish on this list, the cannonball can nevertheless produce a low-pressure sting if it wants to. This sting is a defense ...

Jellyfish are known for drifting to and fro at the whim of ocean currents—but not all species are so passive. The millions of golden jellyfish that pack Palau’s Jellyfish Lake spend much of ...

A jellyfish species has killed over 200,000 salmon in Scotland - in what is believed to be the single worst incident of it type, campaigners say. The String of Pearls Jellyfish (Apolemia uvaria), also ...

Opinions expressed by Forbes Contributors are their own. I write about the world of biology. Jellyfish are among the ocean’s most incredible inhabitants, boasting a wide array of forms and ...

Jellyfish have existed for 500 million years. Their great numbers and a diversity of some 4,000 species make them one of the most important creatures of the deep. A JAMSTEC research team has been ...