ALERT BAY, British Columbia — You’re floating in the ocean when a massive killer whale approaches and gently releases a piece of prey right in front of you, then waits to see what you’ll do. It might ...

When a mother sperm whale gives birth, it is a remarkable team effort. Marine biologists have documented how multiple adult ...

Few people have been lucky enough to see a whale birth, with the last one witnessed decades ago. Now, two major papers ...

SEATTLE — The endangered killer whales of the Pacific Northwest live very different lives from orcas in captivity. They swim up to 100 miles (161 kilometers) a day in pursuit of salmon, instead of ...

Scientists captured a rare sperm whale birth and found strong teamwork, communication, and social bonds in action underwater.

Scientists have recorded the wild orcas engaging in "tongue-nibbling" — a social behavior similar to "making out" or French kissing — for the first time ever. Details on the documentation of this rare ...

Like a proud cat leaving a bird on its owner's doorstep, orcas—also called killer whales—may sometimes offer to share their prey with humans, according to research published in the Journal of ...

In the deep blue waters of the world’s oceans, some of the most intelligent and social creatures on Earth are engaging in behavior that challenges long-held assumptions about the divide between humans ...