The ocean is home to some of the most extraordinary creatures on the planet. From tiny deep sea hunters to massive gentle ...

In the episode, Tunnell said the critters are called onion sea anemones. When out of water, they look exactly how they sound, like an onion. When you put them in the water, the species will shapeshift ...

Beneath the ocean's surface lies a world of perpetual darkness, home to some of Earth's most bizarre and fascinating creatures. These deep-sea inhabitants have evolved extraordinary adaptations to ...

"I find this so interesting. I have not heard or seen this beautiful creature before." ...

The waters off the glittering coastlines of Britain's Caribbean territories have long been a mystery. But now scientists on the first expedition beyond the islands' shallows have discovered an ...

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 ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

Scientists still have much left to learn about the creatures, even as hundreds of thousands of them wash ashore.