Our Planet - S1 E1

2. Frozen Worlds

On the unforgiving frontier of climate change, polar bears, walruses, seals and penguins find their icy Edens in peril.

3. Jungles

Jungles and rainforests are home to an incredible variety of species like preening birds, intelligent orangutans and remarkable ambitious ants.

4. Coastal Seas

From fearsome sharks to lowly urchins, 90 percent of marine creatures live in coastal waters. Protecting these habitats is a battle humanity must win.

5. From Deserts to Grasslands

Cameras follow desert elephants seeking sustenance, bison roaming North America grasslands and caterpillars living the good life underground.

6. The High Seas

Venture into the deep, dark and desolate oceans that are home to an abundance of beautiful -- and downright strange -- creatures.

7. Fresh Water

The need for fresh water is as strong as ever. However, the supply is becoming increasingly unpredictable for all manner of species.

8. Forests

Examine the fragile interdependence that exists between forests' wide variety of residents, including bald eagles, hunting dogs and Siberian tigers.