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 ...

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

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

Avoiding predators is one of the most important jobs for many members of the animal world. Even ocean giants like baleen whales have something to fear from killer whales, their only known natural ...

Over time, that name morphed into "killer whales." Scientists don't know whether orcas kill for fun. The marine mammals do some things, like killing and tossing dead porpoises in the air ...

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 ...

Scientists confirm that orcas and dolphins have lost the ability to return to dry land due to irreversible evolutionary ...

Footage captured in May 2022 shows an aerial view of killer whales hunting and killing great white sharks at Mossel Bay, ...

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

Beach rubbing, when animals swim close to shore to rub their bellies on smooth pebbles, is thought to help scrape off dead ...

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