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

Orcas don’t have any natural predators, so how did this happen? The tooth marks, it turned out, were distinctive – they were ...

In the conversation of the ocean’s greatest predator, the debate usually comes down to orca vs great white shark. Most people would likely say the giant, man-eating great white, and it’s easy to see ...

(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 ...

Scientists found evidence that killer whales may hunt and eat other killer whales, revealing new insights into how ...