The beaches around a popular English seaside destination are being overrun with vast numbers of moon jellyfish. Though generally harmless to humans, the sight is a warning sign of a more serious ...

Extraterrestrial visitors? Airborne jellyfish? Neither or both? What are the nebulous, ringed wraiths drifting above the world’s most active stratovolcano? Rest easy, SETI: The ethereal structures ...

When a thunderstorm recently lit up the night sky, cameras captured towering red shapes that looked uncannily like glowing jellyfish hanging above the clouds. The images raced across social media, and ...

Four reactors at France’s Gravelines nuclear power plant were shut down late Sunday due to a swarm of jellyfish in the cooling systems, operator EDF said on Monday, likely due to rising water ...