Researchers found that a certain group of orcas are killing porpoises for an unknown purpose. The orcas could be doing it just for fun or to teach hunting skills to younger members of the pod. The ...

In the Humboldt Current, off the coast of Chile, an enigmatic pod of orcas has been seen tearing apart unexpected prey. What's even more surprising is the way the orcas then divvied up and shared ...

OCEANSIDE, Calif. (KGTV) - Whale watchers enjoyed a rare encounter off the Southern California coast Monday: four orcas teaming up to prey on dolphins. “It’s very, very rare,” said Oceanside Whale ...

In a rare video captured by a whale watching expedition off the coast of San Diego this week, a killer whale teaches its baby how to hunt by headbutting a dolphin, causing it to flip several times in ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. It was an orca ...

Domenic Biagini was aboard a whale watching tour operated by his company off the coast of San Diego when another company alerted him to the presence of orcas nearby. Due to foggy conditions, the ...

The killer whales came for a buffet. A pod of orcas, thought to be Eastern Tropical Pacific killer whales only seen along the Southern California coast a few times, made a surprise appearance off San ...

Afelandra Glez Cibrián recorded the moment a dolphin jumped out of the ocean and an orca came after it in the southern Gulf of Mexico. Video screenshot A group of boaters found themselves in a ...