Early baleen whales were fearsome predators with wicked teeth, but lost them entirely

Baleen, one surprising fossil suggests, evolved from gums rather than teeth.

Why whales are so big

Marine mammals are a strange bunch, and the sea is a very unforgiving environment.

Right whales face extinction if humans don’t intervene fast, NOAA researchers warn

The ocean will be less without them.

Ancient 36-million-year-old fossil helps track down how baleen whales lost their teeth

At some point, mysticetes decided to drop the hook and fish with a net. How did this all happen?