By about 200 meters, light fades fast, and below 1,000 meters the sea is functionally dark, forcing life to solve survival with stranger tools than most surface creatures ever need. That is why so ...

A swarm of jellyfish shut down four of six nuclear reactors at the Gravelines power plant near Calais, France.

"I’ve been down 3,000 feet alone in the ocean, which has got to be one of the loneliest places on the planet," Widder says.

The name “sea hare” comes from the two tentacles on their heads that resemble a rabbit’s ears. Learn more about this marine mollusk.

SEA LIFE San Antonio is on the hunt for the city’s very first Mini Marine Biologist, and young sea-life fans are invited to make a splash. To enter, kids must submit a 100-word essay explaining why ...

Often mistaken for their more dangerous relatives, the delicate by-the-wind sailors are largely harmless and rely on wind to ...

It's bigger than a double bed, weighs the same as a scrambler motorbike – and has one deadly sting... What are the largest jellyfish in the world? And how big can they grow? Stuart Blackman takes a ...

Researchers are thrilled after catching footage of a Stygiomedusa gigantea, which is also known as a Giant Phantom Jellyfish. The rare creature was spotted off the coast of Argentina by the Schmidt ...

In a comprehensive expedition examining deep-sea ecosystems offshore the entire length of Argentina, scientists aboard Schmidt Ocean Institute's vessel R/V Falkor (too) have documented a rare phantom ...

Rare sighting of Giant phantom jellyfish discovered in Argentina. (Image: Schmidt Ocean Institute/ROV SuBastian) Giant phantom jellyfish filmed by scientists off Argentina's coast in deep waters. The ...

Rare Giant Phantom Jellyfish sighting off Argentina Schmidt Ocean Institute A rare deep sea video of a giant phantom jellyfish drifting through the dark waters off Argentina has stunned viewers and ...