Add Yahoo as a preferred source to see more of our stories on Google. A pod of northern resident killer whales travels together. The same population of orcas was recently seen hunting with Pacific ...

In the cold coastal waters of the North Pacific, a rare alliance is challenging what scientists thought they knew about marine predators. Orcas and dolphins have been filmed coordinating their ...

A dolphin breaking the surface for air can seem like a reminder of its mammalian past. But evolution is not nostalgia. The ...

Add Yahoo as a preferred source to see more of our stories on Google. Researchers discovered that Northern resident killer whales hunt by going silent and eavesdropping on dolphin echolocation to ...

(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 ...

Two mass strandings involving hundreds of dolphins in Argentina probably happened because the pods were being hunted by orcas ...

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 ...

When researchers from the University of British Columbia set out to film the solitary hunting habits of Northern resident killer whales, they expected to see quiet and solitary predators at work.