Hundreds of years ago, people assumed that huge teeth found along the shores of rivers and oceans belonged to dragons. The truth that has been discovered sounds just as fanciful as fire-breathing ...

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

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

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

Sea reptiles the size of whales swam off the ... The creature would have been one of the largest ever known, behind only blue whales and dinosaurs, say scientists. The ancient jawbone was found ...

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

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 ...

An unusual sea slug with a large hood, a tail with fingerlike projections and glowing bioluminescence has been found living ...

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 ...