A team of researchers has found that orcas can imitate human speech patterns as well. They taught an orca named Wikie to ...

Orcas can have brains up to five times heavier than human brains, but scientists say brain size alone is a poor measure of intelligence. Their flexible behavior ...

In two incidents documented in Mexico’s Gulf of California, orcas worked together to blast sunfish into smithereens after they had killed the enormous animals ...

Some orcas hurl their massive bodies onto the shore to snatch sea lion pups from the beach, a calculated gamble that can go fatally wrong if the timing is even slightly off.

Orcas are born with powerful bodies and sharp teeth, but they are not born knowing how to hunt. Here’s why they depend so heavily on learning, teaching and tradition. It’s tempting to assume that an ...

For decades, marine parks presented killer whales as intelligent, powerful animals that could be trained to perform spectacular tricks. Audiences watched trainers swim beside them, ride on their backs ...

Conservation groups say the injuries appeared within weeks on Toñi, the oldest known member of the small Iberian orca ...

Conservationists fear Toñi, the oldest known female in the tiny Iberian orca population, may have been deliberately shot ...

A RARE “Grandmother” killer whale appears to have been blasted with a shotgun in the Strait of Gibraltar. A shocking photo shows the Iberian orca known as Toñi as she was found with ...

Toñi, the oldest known Iberian orca, surfaced in the Strait of Gibraltar with wounds conservationists believe were caused by shotgun pellets.