Scientists have documented what might be the first case of friendly interactions between killer whales and smaller cetaceans. Here's what they think is going on.

Killer whales are the only predators that regularly kill and devour Pacific white-sided dolphins off the B.C. coast. So researchers were surprised when drone footage showed such dolphins playing ...

Besides dolphins, they are known to eat fish, squid, sharks, sea turtles, penguins, seals, walruses, and sea lions. They sit at the top of the oceanic food chain, aside from us humans.

Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review ...

Killer whales have been spotted hunting down dolphins - and sharing the catch with pals - for the first time. The dramatic new images of orcas in the Humboldt Current system, off Chile, show them ...

Collectively, both whales and dolphins, as well as their porpoise cousins, are known as cetaceans. The cetacean order comprises two subgroups: baleen whales (including gray whales, right whales ...

Every year on July 14, people celebrate World Orca Day. This day highlights the beauty, intelligence, and plight of orcas.

So, orcas are whales and dolphins. What do orcas eat? Orcas have a diverse diet and hunt for many different types of food. According to National Geographic, they hunt for fish, walruses, seals ...

Dolphins may seem cute and friendly, but one of their ancestors was quite the giant and behaved like a killer whale, a new study has found. CNN values your feedback 1.

Orcas, also known as killer whales despite being members of the same family as dolphins, are apex predators who are known to feed on nearly every species of large whale. But, they typically go ...

Killer whales have been spotted hunting down dolphins - and sharing the catch with pals - for the first time. The dramatic new images of orcas in the Humboldt Current system, off Chile, show them ...