Killer whales are the only natural predator of baleen whales—those that have "baleen" in their mouths to sieve their plankton ...

New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...

Some baleen whales avoid killer whale attacks by singing songs at deep frequencies that their predators cannot hear.

Learn more about how baleen whales split into two groups — fight or flight — and how these groups determine how loud they sing.

Pack-ice killer whales are highly social creatures ... Typically, kilowatts are quiet when they're searching for prey because sound travels incredibly well in water. And so they could alert ...

But the grieving mother isn’t a person – she's southern resident orca Tahlequah J35, pushing her dead calf through the waters ...

Killer whales are the only natural predator of baleen whales — those that have "baleen" in their mouths to sieve their plankton diet from the water ...

Orcas, like humans, get baby bumps in the early months of pregnancy and grow larger as the pregnancy advances. Researchers ...

The endangered southern resident killer whales that visit Puget Sound were listed for protection under the federal Endangered ...

A welcome sight Thursday morning: Orcas in the Puget Sound. Experts say there’s one distinct thing people should know about ...