Earth’s oceans cover 71% of the planet, but humans have only explored less than 20% of the seas. Scientists believe there are many undiscovered creatures living in its depths. Some species, like the ...

Art often imitates life, and sometimes animals do, too. The enormous jellyfish seen in this YouTube video bears a striking resemblance to the villain from “Star Wars,” but it predates the series by ...

Jellyfish are some of the most mysterious and beautiful creatures in the sea. They have no bones, no brains, and yet they’ve ...

In the ethereal blue glow of the water, a huge shape swept toward them. Around 30 feet long, with four billowing arms and a domed head, the creature was larger than the tourists’ personal submersible.

SAN FRANCISCO (KGO) -- NOAA is offering everyone above water a new look at a rare jellyfish. The National Oceanic and Atmospheric Administration released video showing a "cosmic jellyfish" spotted ...

Despite their often dangerous stings, these creatures create serene scenes as they float through the deep sea Jellyfish are among the planet’s simplest creatures, made up of about 95 percent water and ...

Let’s dive deeper into this incredible marine spectacle. The Enormous Lion’s Mane Jellyfish: A Deep-Sea Giant The lion’s mane ...

Divers often come across weird, unexpected things. It’s not always a good idea to investigate up close. But when John Roney ...

Jellyfish infestations are troubling tourists and scientists alike. A diver attaches a sensor to a large Echizen jellyfish, Oct. 4, 2005 off the coast of Komatsu in Ishikawa prefecture, Japan. Yomiuri ...

The bathypelagic zone of the ocean is 1,000 to 4,000 meters below the surface. Sometimes it's called the midnight zone because it's too deep for sunlight to reach. Most animals here are much smaller ...

An underwater videographer has just published mesmerizing footage of the world’s largest, longest, and heaviest known ...