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 ...

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Aerial image of Southern Resident killer whales taken in the Salish Sea off southern Vancouver Island during health research by SR3 SeaLife Response, Rehabilitation and Research. Images by John Durban ...

Out in the cold, blue stretch of water between Washington State and Canada, a small team of scientists is on a mission to ...

Scientists say they discovered that two well-known types of killer whales in the North Pacific Ocean are actually two separate species and not just different races. In a study published Wednesday, ...

Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review spanning two decades has revealed a little-known, yet intriguing behavior.

Killer whales have joined the rare club of animals that can make and use tools, for the first time being observed crafting a kind of brush out of kelp and then using it on fellow pod members. The feat ...

The award-winning documentary "Blackfish" clearly showed that captive killer whales (orcas) live horrific lives. They are routinely mistreated, forced to breed, and forced to perform stupid and ...

John Ford still recalls the first time he heard them. He’d been puttering around the Deserters Group archipelago, a smattering of spruce- and cedar-choked islands in Queen Charlotte Strait, between ...