PORTLAND, Ore. (KOIN) — Two different populations of killer whales that live in the North Pacific are now thought to be different species, a new study published by the Royal Society shows. Phil Morin, ...

Cetaceans are among the most intelligent creatures in the ocean and many whales have used their big brains to develop cunning ...

SEATTLE —For more than a century, killer whales have been understood to be just one worldwide species, Orcinus orca, with many types. But now, after decades of work, scientists have determined the ...

North Atlantic right whales are among the most endangered mammals on Earth.A new study gives researchers a better understanding of these whales' health -- through their spit.

Endangered Southern Resident killer whales and humpbacks navigate the entire Salish Sea, but a patchwork of conflicting ...

Drone video of gray whales captured over seven years off Oregon has revealed new details about how the giant marine mammals find and eat food. Among the findings, described in two studies published ...