It’s more than 100 feet long, around 300 years old, made of nearly 1 billion little polyps and visible from space ...

North America is home to some of the world's largest animal species. Let's take a look at these animals ranging from land ...

Scientists uncovered the "mystery mollusk," a strange glowing sea creature lurking in the ocean's midnight depths.

"Everyone in the control room let out a loud 'Oooooh!' at the same time. We were all enchanted," a researcher said.

Across the globe great animal gatherings are taking place that make the footfall at a Taylor Swift concert look like a kid’s ...

At 111 feet wide, 104 feet long, 18 feet high, and 600 feet around this stunning organism in the southwest Pacific Ocean is ...

Hunted nearly to extinction during 20th century whaling, the Antarctic blue whale, the world's largest animal, went from a population size of roughly 200,000 to little more than 300. The most recent ...

The "mega" coral is 112-feet wide, 105-feet long and 18-feet high, making it larger than a blue whale, the world's largest animal.

Exclusive photos reveal a sprawling, 300-year-old coral near Solomon Islands, recently discovered by the National Geographic ...