While well-documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in ...

For the first time, an orca was seen raising another whale species’ young A killer whale that "adopted" a baby pilot whale illuminates the strange family dynamics of this intelligent mammal ...

Like a proud cat leaving a bird on its owner's doorstep, orcas—also called killer whales—may sometimes offer to share their ...

Researchers have recorded an orca swimming with a pilot whale calf in a possible interspecies adoption, but how the two came together is a mystery.

A baby pilot whale is lifted out of the water on the back of an unidentified killer whale (Photo by Heleen Middel for the paper Interactions Between Killer Whales (Orcinus orca) and Neonate Long ...

The whales use quick body movements to tear pieces of bull kelp for use as tools, perhaps the first known toolmaking by a marine mammal.

Eventually, however, they started seeing baby pilot whales with orca pods throughout 2022 and 2023, and began to develop theories about what was happening.

By sharing fish with their adult sons, orca moms may skimp on nutrition, cutting their chances of more offspring but boosting the odds for grandwhales.

One day in June 2022 Chérine Baumgartner, a researcher at the Icelandic Orca Project, was watching from a dinghy as a pod of killer whales fed on herring—when she noticed something very odd ...

All the Latest Game Footage and Images from OrcinUS: Orca Pod Rescue Explore the sea and save the killer whales in this "Endless Swimmer" game. Discover unique biomes, orcas, powerups, and more ...

New research suggests these two types of killer whales found off the Pacific coast could actually be different species.

Newborn pilot whales have been spotted mysteriously swimming among pods of orcas. Scientists are trying to puzzle out how the pilot whale calves got there and what happened to them ...