Behavioral ecologist Michael Weiss was browsing through new drone footage of the orca pods he studies in the Salish Sea when he spotted one of the killer whales carrying something green in its mouth ...

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

For the first time, researchers say they have captured footage of killer whales making tools out of seaweed to seemingly ...

Let’s dive deep into their world to explore how smart dolphins really are—a world filled with mimicry, cooperation, empathy, ...