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 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Some specimens of the jellyfish subspecies Botrynema brucei ellinorae have knobs on their bells ...

The giant phantom jelly (Stygiomedusa gigantea) is one of the most enigmatic creatures of the deep sea, captivating ...

Why it matters: The ocean is Earth's largest climate regulator, but its vast size makes it notoriously difficult (and expensive) to study. Biohybrid technology, which merges living organisms with ...

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 ...

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.

In a towering aquarium in a darkened laboratory, moon jellyfish (Aurelia aurita) hover as if floating in space. The glow of neon lights illuminates their translucent, bell-shaped bodies as they expand ...

The most striking feature of the Pacific Barreleye is, without doubt, its transparent, fluid-filled head. Through this clear shield, you can actually see its bright green, tubular eyes pointing upward ...

The deep sea is full of fascinating- albeit terrifying- creatures, that look more like they jumped out of the pages of a sci-fi novel rather than real life. For the general public, images of these ...

From worms with squid-like tentacles to fish with teeth on their tongues, here are some of the most alien-looking creatures in the deep ocean. When you purchase through links on our site, we may earn ...

An entire world lives deep under the ocean’s surface, far from human notice and as bustling as any city. Animals such as tubeworms and clams live crowded around plumes of methane that bubble up ...

The sea walnut, a type of comb jelly that has become invasive in parts of Europe and Asia, can transform from a sexually mature adult back into its larval form when times are tough. When you purchase ...