Check out this video depicting a massive sea spider that lives 2,300 feet underneath the ocean's surface, complete with sea spider facts.

It's one of the planet's largest ecosystems, but remains relatively unexplored. Here are some of the deep-sea animals that we do know something about. The pelican eel (Eurypharynx pelecanoides ...

Contender, a male great white shark measuring nearly 14 feet long, is the largest ever tagged and studied among the Northwest ...

The creature belongs to a genus of giant isopods found in abundance in deep-sea waters. Referred to by the researchers as a "supergiant," the largest of the specimens weighed more than 2.2 pounds ...

Thousands of marine species from microscopic zooplankton to the largest cetaceans rely on sound for survival and many have evolved unique oral and aural adaptations. Understanding them better could ...

Sailors came across many strange creatures, which inspired the myths of sea monsters we know today. Let’s explore some real-life animals that gave rise to mythical beings. Sailors in the Middle ...

Manatees, looking from afar with their big eyes ... Kraken The Kraken, a legendary sea monster feared by sailors, finds its roots in real-life marine creatures, particularly the giant squid.

Creatures that live in deep sea environments, such as this sea angel, are quite unlike the beings we're accustomed to seeing on land. Yiming Chen / Getty Images ...