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

Over a year after a dead 15-foot shark was found with mysterious bite wounds and stripped of its internal organs, DNA ...

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 ...

Recent findings used wildlife forensics and citizen science data to provide the first confirmed evidence of killer whale ...

Over time, that name morphed into "killer whales." Scientists don't know whether ... Males are bigger than females, but they both vary in size and weight. The largest orca ever recorded was ...

You can watch PBS on television via most cable TV packages — check your local listings for details. You can also live stream "Expedition Killer Whale" for free on the PBS website and app, which will ...

Scientists said the presence of killer whale DNA on the great white shark was the result of a "true predation event".

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

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 ...