Each killer whale has a distinct pattern of pigmentation behind its dorsal fin. How do these patterns vary around the world?

A unique fjord in Chilean Patagonia gives scientists a chance to unlock the reproductive secrets of cold-water corals that ...

Tundra Books It’s common for children to request their most beloved picture books on repeat. This counting book embraces this ...

Careful illumination helps showcase a bluebottle’s constituent bits, both above and below the water’s surface.

In Hawai‘i, people, pigs, and ecosystems only have so much room to coexist, and the pigs exist a little too much.

One Great Shot: Are You Ready for This, Jelly? During a nighttime dive, a veteran underwater photographer captured a tiny fish’s cunning effort to find a safe spot in a dark sea.

The Canadian government and the Ehattesaht First Nation dropped a huge chunk of change trying to save the stranded killer whale kʷiisaḥiʔis (Brave Little Hunter). Now, they’re wondering how to make up ...

A massive environmental calamity rocked the ancient Mediterranean. It took millions of years for the ecosystem to recover.

New research estimates that some 200,000 birds are accidentally caught in fishing gear in Europe each year.

Scientists are working on a machine learning tool that could, one day, identify individual animals from photographs of their footprints.