Southern Resident killer whales are a small and well-studied group of orcas that have long been seen as an isolated group without much outside connection. New research challenges that view, ...

As scientists scramble to learn more about them, questions abound over what drove these mystery orcas into the Salish Sea, ...

The mystery orcas are back in the Puget Sound. For the last few weeks, a pod of unfamiliar orcas has been coming and going ...

Kayleigh Nicole Grant had a once-in-a-lifetime underwater encounter. The professional ocean diver detailed an unforgettable interaction with a pod of orca whales in a recent video shared on Instagram, ...

On March 6, three orcas showed up in Canada’s Vancouver Harbour, later heading south to Seattle, Tacoma and Olympia, that ...

Killer whales are apex predators with immense strength, intelligence, and coordinated hunting strategies that allow them to take down large marine animals. Their bite force and teamwork make them ...

SEATTLE — With breaches and tail slapping, a pod of orca whales put on a show near Seattle on Friday. The close encounter attracted dozens of people to the shore of the West Seattle neighborhood.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Tahlequah, the ...

It is unclear if southern resident killer whale J36, also known as Alki, had a stillborn calf or if her female newborn died shortly after birth A mother orca is mourning the loss of her recently ...