Sailors encountering killer whales in British waters have been warned to switch off their engines and lower their sails or ...

The orca potlatch moment was electrifying. "It kept me up at night, I could not let it go," Towers said. Talking with other whale researchers about what had happened, Towers learned they, too, had ...

An orca that carried her dead calf for 17 days in 2018 seems to be repeating the behavior with a newly deceased baby whale. Researchers say it's a show of grief. An orca mother carried her dead ...

The appearance of a new orca calf in Washington’s Puget Sound last month was cause for celebration. The young female, whom researchers named J61, was a new addition to the Southern Resident ...

An orca who made headlines in 2018 after she carried her dead calf for more than two weeks was again spotted carrying the body of her newborn, just days after researchers confirmed she'd given birth.

In 2018, the apparent deep mourning of this orca, identified by researchers as J35 and also known as Tahlequah, became a symbol of the plight of the Southern Resident whales. While orcas sometimes ...