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 ...

New research has confirmed that West Coast transient killer whales who live between British Columbia and California are two distinct subpopulations: inner and outer coast transients. Based on 16 years ...

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.

New research confirms two distinct groups of West Coast killer whales with different diets, habitats, and behaviors.

Inner coast transient killer whale hunting close to a Steller sea lion haulout off the outer coast of Washington. New research has confirmed that West Coast transient killer whales who live between ...