From red to blue, harmless to lethal, and microscopic to humongous, jellyfish come in all different shapes and sizes and are ...

A rarely seen giant phantom jellyfish — a deep-sea creature with arms that can stretch up to 10 meters long — has been captured on camera off the coast of Argentina, offering scientists a rare glimpse ...

Diver and underwater videographer John Roney shared mesmerizing footage from his last dive — a close-up of the world's largest jellyfish, the lion's mane jellyfish. As Gizmodo reported, the footage ...

The elusive deep-sea creature typically lives over 1,000 meters below sea level, but was seen around 250 meters below sea level Scientists filmed a rare giant phantom jellyfish off Argentina during a ...