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

In a baffling show of generosity, killer whales across the globe are giving fish to humans—and scientists are racing to ...

Researchers have identified a fascinating behavior in killer whales, aka orcas: they sometimes offer to share their prey with ...

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

A study published in the journal Current Biology describes a new example of tool use by a critically endangered population of ...

The study highlights that about 20% of the genetic makeup of southwestern Australian killer whales can be traced back to Antarctic ancestors, with gene flow occurring both historically and ...

Killer whale populations in low latitudes have high genetic diversity despite having low population densities, as a result of genetic mixing, which plays a crucial role in their survival and ...

J35, a southern resident killer whale also known as Tahlequah, carried her child's body on her head for 17 days across a distance of 1,000 miles in 2018, according to the Center for Whale Research.

Whale sharks are gentle, filter-feeding giants, but orcas in Mexican waters were documented attacking the animals and devouring their livers.

Killer whales off Mexico have developed coordinated hunting skills to take down whale sharks, adding to their reputation as the ocean's top predator.

A killer whale mom, who shot to fame after she carried her dead calf’s corpse with her for more than two weeks in a harrowing tale of grief, has lost another baby, scientists revealed. The orca ...

The study highlights that about 20% of the genetic makeup of southwestern Australian killer whales can be traced back to Antarctic ancestors, with gene flow occurring both historically and ...