Amid challenges like dwindling salmon, noise pollution and climate change, the Pacific Northwest is wrestling with how to ...

Orcas are wily hunters known for cleverly adapting their takedown techniques based on their location and target prey. They’ll ...

Learn more about the orcas seen attacking white sharks in the Gulf of California and why they seem to go for the liver.

SEATTLE — The endangered killer whales of the Pacific Northwest live very different lives from orcas in captivity. They swim up to 100 miles (161 kilometers) a day in pursuit of salmon, instead of ...

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.

Behavioral ecologist Michael Weiss was browsing through new drone footage of the orca pods he studies in the Salish Sea when he spotted one of the killer whales carrying something green in its mouth ...

Seven minutes into the video, the whales attacked a second juvenile white shark. This one was worked over repeatedly until ...