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

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 ...

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

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

The pod of killer whales that showed up Thursday, Jan. 30, have only been documented less than 10 times since 1993.

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.

Based on DNA analysis from the bite wounds on the carcass of a large white shark washed ashore near Portland in Victoria in ...

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 ...