This is the moment an orca was spotted for the first time hunting with Pacific white-sided dolphins. New research has found that killer whales tag-team with dolphins to hunt salmon. The two marine ...

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 ...

(CNN) — A pod of Pacific white-sided dolphins off the coast of British Columbia have been observed cooperating with orcas, a traditional enemy that’s better known for taking out great white sharks ...

With all the splashing, it was hard to tell what was happening under water. As the orcas surfaced to take a breath, dolphins were darting around their heads, but the water was so murky that the ...

Sarah Fortune, an assistant professor in oceanography at Halifax’s Dalhousie University, said it would appear the massive ...

Living up to their names, killer whales have been killing other marine mammals but not eating them for decades, and scientists aren't sure exactly why. Orcas seemingly hunt down, harass, and often ...