"We are witnessing an evolutionary process." Scientists discovery cause behind recent killer whale attacks: 'They should be ...

In the official world of taxonomy, there is only one species of killer whale: Orcinus orca—therefore, the behavior qualifies as cannibalism. "But in the real world, killer whales are so different from ...

WARNING, GRAPHIC CONTENT: The footage shows several orcas taking turns with the carcass, highlighting their cooperative ...

A new species of killer whale has been discovered off the southern coast of Chile. Researchers from San Diego's Scripps Institution of Oceanography say the whales look distinctly different than orcas.

Orcas, also known as killer whales, are among the most well-studied marine mammals, captivating the public and scientists alike with their intelligence, strong social bonds and complex behaviors.

Like a proud cat leaving a bird on its owner's doorstep, orcas—also called killer whales—may sometimes offer to share their prey with humans, according to research published in the Journal of ...

Blue whale calves enter the world already the size of a bus, yet they still face danger. A hungry killer whale sees a slow, ...

Ask anyone who’s had encounters with killer whales, and they will tell you just how smart they are. Orcas are incredibly intelligent creatures, capable of complex hunting strategies. They also engage ...

The rule change would increase the distance boats must keep from the endangered orcas to 1,000 metres from the current 400.