The natural world is full of animals that seem to defy logic, blurring the line between reality and imagination. Some look ...

These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...

Far below the ocean’s surface, where sunlight disappears and pressure reaches crushing levels, some of the planet’s strangest ...

In Earth's fossil record, soft-bodied organisms like jellyfish rarely stand the test of time. What's more, it's hard for any ...

A strange little snake fossil found on England’s south coast has finally revealed its secrets—more than 40 years after it was ...

Officials found a morbid sight greeting them on the bow of a docked cargo ship in Gloucester City, New Jersey.

Despite being mammals, these remarkably cancer-resistant animals share a lot in common with cold-blooded species.

Red blood is the exception, not the rule. Evolution has painted it green, purple and white in animals that push physiology ...

GUAM — Only a scattering of light penetrates the deep water, more than 300 feet beneath the ocean surface off the coast of Guam. It's like twilight to the human eye, even in the middle of the day.

One that caught attention from many was a type of sea mollusk that washed ashore on South Padre Island in late May. Beachgoers joked that it was an "alien" and called it "freaky" looking. They told ...

Sanctuary Manager Nick Stock spotted an isolated rocky outcrop from a helicopter overhead, and on a hunch laid down a single ...