Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the biggest animal that has ever existed. Whales can be found in every ocean, ...

Despite their underwater habitat, whales are mammals. Mammals are not solely terrestrial; some, including whales and dolphins, are fully aquatic the University of Michigan Museum of Zoology reports.

The oceans are thought to be where life started but about 50-million years ago, something incredible happened: some mammals found their way back into the water. NOVA is available to stream on pbs.org ...

Learn about the different ideas that came together in Massachusetts to make the right whale the "right" whale to represent ...