A rare encounter was caught on camera off the Big Island when two massive killer whales — also known as orcas — swam right up ...

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

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

Prior to this instance, the “tongue-nibbling” had only been observed a handful of times in captivity. First seen in captive ...

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

Northland orca expert Ingrid Visser has been involved in a global study that shows killer whales attempting to share prey ...

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

Wild orcas occasionally approach humans and offer us food, according to a new study — but scientists aren't sure why.

The apex predators have offered up fish, birds, turtles and whales to humans around the world, according to the study.

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