Killer whales are the only natural predator of baleen whales—those that have "baleen" in their mouths to sieve their plankton diet from the water. More solitary than toothed whales, baleen whales face ...

Wildlife experts believe a rare species of whale has been spotted near Cornwall ... The charity added one of the whales seen in the water between St Mary's and St Agnes was potentially a rare ...

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 ...