Three orcas that had not previously been recorded in the Seattle area have delighted whale watchers with several visits.

The three killer whales, not previously recorded in the region, may have traveled from Alaska ...

As scientists scramble to learn more about them, questions abound over what drove these mystery orcas into the Salish Sea, ...

The mystery orcas are back in the Puget Sound. For the last few weeks, a pod of unfamiliar orcas has been coming and going ...

In the North Pacific, orca fins with signs of cannibalism are washing up on a Russian beach. The findings suggest that killer whales occasionally participate in cannibalism, which might explain why ...

Add Yahoo as a preferred source to see more of our stories on Google. Orcas in the Gulf of California off the coast of Mexico have been spotted hunting young great white sharks by flipping them over ...