In each of these cases, the killer whales approached the people on their own and dropped their prey in front of them. “This ...

Scientists say rare behaviour observed in Pacific Northwest shows how much we still don’t know about marine mammals ...

Killer whales rarely risk hunting leopard seals ... - He's still up there but fighting to stay on. When you think about the amount of energy that is expended to catch one seal.

Dave Phillips, a scientist that helped to rewild Keiko, the orca who starred in "Free Willy," is working to help two other killer whales, Wikie and Keijo, move from a closed marine park to a sea ...

Killer whales have become something of a menace to seafarers around the world, with orca attacks on boats and yachts increasing every year leaving some sailors fearing for their lives. Now, as ...

Killer whales are known for their intelligence and power, even an inclination to sink yachts. Now, research is showing how they take down prey that few other animals can. Why it matters: The ...

Killer whales are the only natural predator of baleen whales—those that have "baleen" in their mouths to sieve their plankton diet from the water. More solitary than toothed whales, baleen ...

Seven false killer whales stranded on a beach in Western Australia, photos show. Then, rescuers rushed in to help, managing to save a handful of them.

Killer whales bring back wearing salmon hats, but it’s not for fashion. Two orcas from the Pacific Northwest were spotted with dead salmon on their heads, an act first documented in the 1980s.

For the first time in half a century, a group of killer whales, or orcas, returned to a cove in Washington's Puget Sound. Penn Cove is known for a roundup by hunters that took place in the 1970s.