Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.

Lurking beneath the surface of Washington's Puget Sound are some of nature's most magnificent and endangered species: orca ...

SEATTLE — The Wenatchee is making history in the Puget Sound. The Washington state ferry is running on hybrid-electric power.

Researchers using a new drone say they have observed killer whales finding and modifying stalks of kelp to preen each other.

The scene was captured on video by the crew of Puget Sound Express, who also dropped a hydrophone into the water to record a chorus of vocalizations.

Quiet Sound launches first-of-its-kind thermal camera to monitor orca movements amid busy Puget Sound, enhancing night-time whale detection.

This is the first of its kind along the West Coast and now offers data on where orcas are traveling overnight, which ...

Keeping track of hundreds of orcas is being made simpler with the help of an AI algorithm that can identify individual killer whales with 92% accuracy.