Whale watchers in Madeira captured the astonishing moment orcas took down the deep-diving marine mammal. The predatory ...

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 among the ocean’s most powerful predators. They can prey on stingrays, seals, porpoises, and even massive baleen whales. They are also known for disrupting great white sharks and ...

A federal judge has awarded an environmental group more than $1.6 million for prevailing in a lawsuit against Endangered ...

Imagine a game of tag where life hangs in the balance. Welcome to the Arctic, where Weddell seals and killer whales have been perfecting their deadly dance for 34 million years. This isn’t just nature ...

Killer whales, also known as orcas, are easily recognized by their stunning black and white appearance. These huge animals can reach up to 26 feet long and are actually the largest members of the ...

In the fall of 2018, a lone killer whale approached a boat in the Pacific Ocean. It didn’t attack the vessel — as has happened numerous times in recent years. Instead, it offered up an unexpected gift ...

Researchers identified two ecologically distinct communities of transient killer whales along the West Coast, each with unique hunting behaviors, habitats, and social networks.

The killer whales ripped the liver out of a shark and passed it around—only the second time orcas have been seen engaging in ...

Have you ever considered sharing your lunch with an orca? Because a new study suggests they thought about sharing their meals with you. The study, published in the Journal of Comparative Psychology, ...