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

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 ...

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

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

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

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

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

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 ...

Today, there are only 73 southern resident orcas left, fewer than when they were listed for protection, and their risk of ...

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 ...