While well documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in Australia. However, orcas are actually sighted year-round in all coastal ...

Scientific analysis of "cannibal" killer whales might seem shocking at first glance, but it might also indicate that our ...

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

New research shows southern resident killer whales grooming each other using kelp they’ve modified, and researchers think it’s the first time researchers have documented marine mammals making tools.

Add Yahoo as a preferred source to see more of our stories on Google. Orcas, or killer whales, are deadly and beautiful apex predators. New 'Forbidden Fruits' trailer teases a witchy mean girls ...

Where there are Chinook salmon, the orcas will likely follow — including the mouth of the Columbia River. Despite what can feel like a desperate and futile effort to save the region’s venerated ...

The “snake” in the documentary film “The Snake and the Whale” is the Snake River. The “whale” of the title refers to the ...

Killer whales have been seen detaching lengths of seaweed and using them to massage each other – the first evidence of tool-making by marine mammals. The whales bite off the end of a kelp stalk, ...

One of the world’s largest mammals, the humpback whale is an incredible species for many reasons. They may even be the ocean’s protectors. Researchers have witnessed humpback whales intervening during ...