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

Pack-ice killer whales are highly social creatures, communicating through various vocalizations like pulsed calls and whistles. For the first time, researchers have recorded these vocalizations and ...

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 ...

Read more about sperm whales: http://j.mp/sOSais Watch underwater footage of the mammal and hear its strange clicking sounds that are crucial to their survival What ...

Hamran is an acoustic researcher studying the sounds marine mammals like whales and dolphins use to communicate. She's captured hundreds of hours of orca recordings. This summer, she's listening ...