Canada and the U.S. are playing by different rules when it comes to protecting threatened whales, experts warn.

Where there are Chinook salmon, the orcas will likely follow — including the mouth of the Columbia River. Despite what can feel like a desperate and futile effort to save the region’s venerated ...

OPALCO's proposed tidal energy project in the Salish Sea faces opposition due to concerns about its impact on endangered killer whales. The cooperative argues the turbine is necessary to prevent ...

Orcas, or killer whales, are deadly and beautiful apex predators.

While well documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in Australia. However, orcas are actually sighted year-round in all coastal ...

A pod of endangered Southern Resident Killer Whales were spotted off the coast of Monterey Bay, California. The whales rely on Chinook salmon as their primary food source, but salmon populations are ...

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 ...

New research shows southern resident killer whales grooming each other using kelp they’ve modified, and researchers think it’s the first time researchers have documented marine mammals making tools.

Tahlequah, the killer whale who carried her dead calf and swam with him for 17 days, has given birth to her second baby since 2018. The Center for Whale Research first became aware of the new calf on ...

Killer whales rarely risk hunting leopard seals – Antarctica’s second top predator. But when reinforcement whales appear, this group of killer whales has a technique for capturing this aggressive ...