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 ...

Dubbed "allokelping," it might be a unique cultural phenomenon that's as endangered as the orca population itself ...

In the footage, the killer whale repeatedly bumps up against the vessel; The incident took place near the Strait of Gibraltar, which has seen a rise in orca boat attacks over the past few years; ...

Tahlequah, the killer whale who made headlines for mourning her dead calf in a unique two-week "tour of grief" seven years ago, is reacting to her latest deceased newborn the same way, a heart ...

Experts first documented juvenile Iberian killer whales — a "unique subpopulation of killer whales that lives in the northeast Atlantic," — touching, pushing, and even turning vessels ...

Despite the name “killer whale,” there’s only one well-documented instance of a wild orca attacking someone — Hans Kretschmer, who was bitten on the leg while surfing in California in 1972.

An orca pod in the Pacific Ocean off the coast of Mexico has devised a cunning strategy to hunt and kill whale sharks — the world’s largest fish that can grow up to 18 meters (60 feet) in ...

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. Orcas in Mexico's Gulf of ...

A killer whale was spotted balancing a salmon on its head. It’s not clear what the behavior means, but orcas were observed doing the same thing in the 1980s. Orcas were previously seen sporting ...

The adult male killer whale Moctezuma and five other killer whales (two adult females, two juveniles, one calf), in the vicinity of the juvenile whale shark, measuring around 6 meters.

Next, the orcas bite off the whale shark’s pelvic fins, causing it to bleed to death. Then, they eat the fish’s organs, including its enormous fatty liver. It’s gruesome, and effective.