A shiny is a very rare Pokémon that comes in a different color than usual. It may be a fictional concept, but nature has no ...

These gorgeous, long-tailed marine creatures—formerly known as Siamese fighting fish—have been famous for centuries for their aggressive nature, which breeders have exploited in order to fight them, ...

Beneath the ocean’s surface lies a world bursting with color—far more vibrant than many of us realize. From neon-bright fish to spotted crustaceans, some of the most colorful sea animals on the planet ...

In nature, the ability to change color can be key to survival. Vision is a very important sense in much of the animal kingdom, and many animals have come up with unique ways to use this sense to ...

Species are fizzling out of existence at a rate faster than any other time in human history—and no one is more aware of that fact than National Geographic photographer Joel Sartore. After 13 years of ...