The species Orcinus orca, generally known as orcas or killer whales, is made up of many genetically distinct populations ...

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.

Esther Jacobs smelled murder on the water. As the pungent odor of shark liver filled the air and an oily sheen spread across the surface, Jacobs had come upon an aquatic crime scene - and two ...

Killer whales and dolphins have been working together to hunt salmon in the northern Pacific Ocean, an unexpected finding that further reveals the complex social lives of marine mammals. Video cameras ...

Biologists discovered killer whales and dolphins working together to hunt salmon, a behavior never before documented in this ...

A study comparing the nutritional demands of killer whales with the caloric content of their prey has startling implications for the potential impact of these large predators on populations of other ...

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 ...