Killer whales have attacked yachts off the coast of Spain and Portugal on several occasions in the past few weeks, causing ...

This visual guide explains the interactions that orcas, also known as killer whales, are having with ships and why scientists think it's happening.

Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review spanning two decades has revealed a little-known, yet intriguing behavior.

In the waters off Washington State, a mother orca has been seen pushing her dead newborn calf, seemingly in mourning. It ...

Learn more about why humpback whales show inadvertent altruism as they save smaller mammals from orcas.

Researchers document a behavior called "allokelping" in which one killer whale uses kelp to massage the back of another killer whale, near San Juan Island (Reuters) -Killer whales are known for ...

Two killer whales scrubbing kelp between their backs, also known as “allokelping.” Credit: Center for Whale Research, NMFS NOAA Permit 27038 Lots of animals use tools to get their food, but ...

MELBOURNE, Australia (AP) - Marine experts have given up hope of rescuing more than 150 false killer whales that stranded on a remote beach on Australia’s island state of Tasmania, officials said on ...

Killer whales trapped under ice in a remote Quebec village have reached safety. Jan. 10, 2013— -- The killer whales trapped under ice near a remote Quebec village reached safety today after the ...