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, ...

Scientific analysis of "cannibal" killer whales might seem shocking at first glance, but it might also indicate that our ...

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

Blue whale calves enter the world already the size of a bus, yet they still face danger. A hungry killer whale sees a slow, ...

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, ...

The “snake” in the documentary film “The Snake and the Whale” is the Snake River. The “whale” of the title refers to the ...

WARNING, GRAPHIC CONTENT: The footage shows several orcas taking turns with the carcass, highlighting their cooperative ...

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 ...