A long-term study using DNA from whale scat has revealed surprising complexity in the diets of southern Alaska’s fish-eating killer whales.

Fish-eating killer whales in southern Alaska have a diverse, seasonally changing diet featuring salmon and groundfish, ...

A long-term study shows southern Alaska killer whales switch between salmon species and also eat groundfish as seasons and ...

KILLER whales have broken into an all out cannibalistic civil war, scientists believe. Biologists have warned of an all-out ...

A federal judge has awarded an environmental group more than $1.6 million for prevailing in a lawsuit against Endangered Species Act regulations for killer whales. In 2020, the Wild Fish Conservancy ...

A new species of killer whale has been discovered off the southern coast of Chile. Researchers from San Diego's Scripps Institution of Oceanography say the whales look distinctly different than orcas.

While killer whales (Orcinus orca) can trigger the immediate departure of white sharks (Carcharodon carcharias), extended absences from their aggregation sites are also part of the sharks' natural ...

Killer whales and dolphins have been found hunting together for the first time. Canadian scientists said the two species had developed a “strategic allegiance” to hunt salmon in deep water. A study in ...

Researchers have observed dolphins and killer whales hunting together for the first time as part of a new study released on Thursday, Dec. 11. The top predators joined forces to feast on salmon off ...

A unique species of endangered Pacific dolphin off Hawaii are declining at a faster rate than once thought, with the largest distinct population segment expected to drop below 100 individuals by the ...

Off the coast of Mexico, a pod of killer whales has developed a specialized hunting technique. They flip juvenile great white sharks upside down in a way that likely triggers a trance-like paralysis, ...