New research confirms two distinct groups of West Coast killer whales with different diets, habitats, and behaviors.

SEATTLE — For the last three years, not one calf has been born to the dwindling pods of black-and-white killer whales spouting geysers of mist off the coast in the Pacific Northwest. Normally four or ...

Monika Wieland Shields, Director of the Orca Behavior Institute, has observed orcas in the Salish Sea, a marginal sea of the Pacific Ocean located in the Canadian province of British Columbia and the ...

The latest survey of endangered southern resident killer whales confirms their plateau and gradual slide toward disappearance ...

The Miami Seaquarium announced in March that the orca was set to be returned to the waters in the Pacific Northwest after 53 years in captivity Jeff Greenberg/Universal Images Group via Getty Lolita, ...

Orcas, or killer whales, are deadly and beautiful apex predators. Family mourns 18-year-old who died on Carnival cruise ship ...

Despite initial optimism about its condition, J-64 has not been seen since October 23, when researchers saw all 27 members of ...