Killer whales have been seen detaching lengths of seaweed and using them to massage each other—the first evidence of tool-making by marine mammals. The whales bite off the end of a kelp stalk, ...

A well-known male killer whale was spotted June 9 traveling alone through Yaquina Bay and along the central Oregon coast, drawing attention from researchers, photographers and onlookers as he hunted ...

A team of marine biologists are investigating the mysterious mass stranding of orcas in Argentina, after 26 killer whales were found on the beach with no signs of injury or trauma. Specialists at the ...

UBC researchers captured rare footage of killer whales teaming up with dolphins to hunt fish off Vancouver Island, revealing an unexpected win-win feeding strategy.

Scientists have captured rare footage of killer whales and Pacific white-sided dolphins hunting together near the coast of ...

Scientists confirmed that West Coast transient killer whales actually form two separate groups split between inner and outer coastal habitats. Inner-coast whales hunt smaller prey in shallow, ...

Orcas, also known as killer whales, are among the most well-studied marine mammals, captivating the public and scientists alike with their intelligence, strong social bonds and complex behaviors.

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 been seen detaching lengths of seaweed and using them to massage each other – the first evidence of tool-making by marine mammals. The whales bite off the end of a kelp stalk, ...