The same is true for polar bears and elephants.

CNN: Beauty trumps beast in conservation efforts

This follows the movements of tagged elephants, whales and polar bears.

BBC: Love Earth

"Although the elephants and the humpback whales and polar bears are the animal stars, the other big star of the movie is the earth -- the planet itself, " said Fothergill.

CNN: 'Earth' takes viewers on 'breathtaking' global journey