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 ...

A recent theory proposes that whales weren’t just predators in the ocean environment: Nutrients that whales excreted may have ...

The animal’s dorsal fin was still floppy, indicating it was less than 24 hours old, according to news reports.

After a 38-foot-long female gray whale washed ashore at Dockweiler Beach, scientists look for a cause of death: 'Each mortality has a story to tell.' ...

The 39-foot gray whale carcass was discovered floating off Marina del Rey on Saturday with most of its head missing.

Ocean's Giant The blue whale is a true marvel of the marine world. Known as the largest animal to ever exist on Earth, these ...