Killer whales along the South African coast have been killing great white sharks and stripping out a single organ: the liver.

Northern Resident killer whales along the Pacific coast are suppressing their own calls and trailing Pacific white-sided ...

We are so glad we weren't on that boat.

First observed in the 1980s, the fad of orcas swimming around with dead salmon on their foreheads off Washington State seemed to have faded—until now. An orca from the southern resident population off ...

In a newly published study, researchers documented more than two dozen cases of orcas giving prey to humans. What’s behind this curious behavior? Photo from the Orca Research Trust In the fall of 2018 ...

For more than five years, killer whales have been ramming – and in some cases sinking – expensive yachts, sailboats and fishing boats in the crystalline waters off the coasts of Spain, Portugal, ...

(CNN) — Behavioral ecologist Michael Weiss was browsing through new drone footage of the orca pods he studies in the Salish Sea when he spotted one of the killer whales carrying something green in its ...

"... Its prevalence is extremely low — it may appear and then not be observed again for several years," the study’s co-author, Javier Almunia said Kimberlee ...

Whales observed in Salish Sea off western North America Behavior is a rare instance of tool use by marine mammals It may promote skin health and strengthen social bonds June 24 (Reuters) - Killer ...

The behavior is specific to Northern Resident killer whales, who live in the northeastern part of the North Pacific Ocean Experts call the behavior "beach rubbing" Residents and visitors in British ...

Once again, an endangered orca in Washington state has been seen carrying her dead newborn calf in what appears to be an effort to revive it. Researchers with the Center for Whale Research, Sea Doc ...