Pacific white-sided dolphins swim off the coast of British Columbia. Dolphins and porpoises in this region have been spotted swimming alongside a population of killer whales known as northern resident orcas. Scientists have theories about why. Photograph ...

Killer whales or orca (Orcinus orca) have been observed hunting with Pacific white-sided dolphins (Lagenorhynchus obliquidens) in the waters off British Columbia, Canada, and sharing fish scraps with them after making a kill,

A new study offers rare insights into how two species use each others’ sounds, size and speed to eat better together than they could alone

A crowd gathered in Seattle to watch a pod of Bigg's killer whales on Sunday. They saw one whale suddenly catch a bird. Bigg's killer whales are orcas that usually prey on marine mammals like sea lions or porpoises. National Geographic unveiled its ...

SEATTLE – A pod of orcas swam close to shore and amazed onlookers in Seattle by treating the whale watchers to the rare sight of the apex predators hunting a bird. The pod of Bigg’s killer whales visited Elliott Bay and were seemingly on a hunt ...

Ambassador Cruise Line and ORCA have announced that the #AmbassadorForWhales fundraising initiative has raised £18,426 in support of the charity's work protecting whales, dolphins and porpoises. The initiative ran from October 27 to November 12.

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 also endangered. A federally endangered species of killer ...