Catie Leary writes and curates visual stories about science, animals, the arts, travel, and the natural world. The blue jay (Cyanocitta cristata) produces melanin, a black pigment, meaning that ...

In the U.S., 719 animal species are listed as federally endangered or threatened. Every state is home to endangered species—some well-known, some obscure. All are vital to their ecosystems.

Researchers are flocking to a 425-foot-deep "blue hole" off Florida's Gulf Coast next month in search of signs of life, among other things. The hole has been dubbed Green Banana.

The colorful animal was discovered in Thailand, researchers said. ‘Giant’ creature — with ‘jewel-like’ body — found in a rocky hole. It’s a new species ...

It was named Paraparatrechina neela, the latter meaning blue in “most Indian languages,” researchers said, and is the first species of its genus to be discovered in 121 years.