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 ...

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

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 ...

Some baleen whales avoid killer whale attacks by singing songs at deep frequencies that their predators cannot hear.

The clip shows a group of seven orcas — four adults and three calves — as they circle a seal on a tiny chunk of ice in ...

Researchers collected DNA samples from the distinctive bite wounds on the shark’s body that washed ashore near Portland, ...

Two studies reveal that the communication systems of most cetaceans examined adhere to the principles of efficiency and ...