The blue whale's diet consists of krill ... a group that includes humpback whales and gray whales, among others. Orca whales (killer whales) have been known to kill blue whales, even though ...

Over the weekend, a 38-foot-long female gray whale washed ashore at Dockweiler State Beach, prompting an outpouring of grief from marine mammal lovers and leaving an important question etched into ...

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 ...