Recent videos show astonishing behavior in orcas: these marine mammals have repeatedly attempted to share their food with ...

When researcher Jared Towers set up his cameras underwater to observe a pair of killer whales, he saw something strange.

The world of animals is difficult to explore in its entirety. One of mankind's goals since time immemorial has been to know ...

Haight listed several popular viewpoints in Pierce County for seeing the whales: ...

Researchers documented 34 instances of purported prey-sharing behavior, which suggests orcas may be altruistic and capable of ...

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something ...

Researchers have documented orcas seemingly gifting rays, seals and fish to scientists and divers, which could suggest they ...

To start a kelp-based grooming session, an orca places the bull kelp stipe on its face and nuzzles against another killer ...

Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.