Killer whales have been spotted swimming around with dead salmon on their heads. The behavior was first spotted in 1987, among the Southern Resident population of killer whales, a critically ...

In the deep blue waters of the world’s oceans, some of the most intelligent and social creatures on Earth are engaging in behavior that challenges long-held assumptions about the divide between humans ...

Orcas are some of the ocean's most enigmatic and playful creatures, and they're not as elusive as you might think. Here's ...

SeaWorld Orlando officials announced the death Sunday of a 50-year-old killer whale named Katina.

SeaWorld killer whale Katina has died at 50, prompting renewed criticism of lifelong orca captivity and its impact on animal ...

SEATTLE — The endangered killer whales of the Pacific Northwest live very different lives from orcas in captivity. They swim up to 100 miles (161 kilometers) a day in pursuit of salmon, instead of ...

The 50-year-old orca had been at SeaWorld Orlando for 40 years and was one of just five killer whales at the park.

In the study, researchers from Canada, New Zealand and Mexico reported on 34 interactions spanning two decades in which orcas in the wild attempted to offer food to humans. The incidents took place in ...

Scientists believe that the kissing-like behavior likely reinforces "social bonds" between the animals Scientists have recorded the wild orcas engaging in "tongue-nibbling" — a social behavior similar ...

The award-winning documentary "Blackfish" clearly showed that captive killer whales (orcas) live horrific lives. They are routinely mistreated, forced to breed, and forced to perform stupid and ...

Why do killer whales (orcas) in captivity kill humans, whereas this doesn't happen in the wild? Federal hearings on the safety of keeping killer whales in captivity began this week, convened by the ...