“They’re cool!” a girl exclaims. “I think they’re just mesmerizing,” Jennie Janssen, the assistant curator who oversees the care of the aquarium’s jellyfish, tells me. “They don ...

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 ...

And you're splashing around in the cool water when SUDDENLY Your leg feels like it's been stabbed by a thousand hot needles. You got stung by a jellyfish. This sea critter has thousands of tiny ...

In recognition of the high standard of entries, 25 extra images were selected by the Natural History Museum and put to the public vote. Moon jellyfish swarm in the cool autumnal waters of a fjord ...