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 ...

Researchers have documented orcas dropping prey and other marine life in front of humans, as if offering us food. The orcas' ...

Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the ...

The mother orca, known as Tahlequah or J35, was seen carrying the body of the deceased female calf since Wednesday, the Washington state-based Center for Whale Research said in a Facebook post.

This Sunday, June 29, join the Orca Network and Washington State Ferries staff aboard the Tokitae ferry noon to 4 p.m. as ...