Tropical Indonesia's coral reefs are home to fantasy-like creatures, such as the head-butting pygmy seahorses and bands of 30-strong sea snakes that hunt in packs, using a cunning strategy.
Starting with the birth of a mountain, take a tour on how geological forces shape the land, and how the most adaptable and secretive animals on Earth rise to the challenges of mountain life.
Follow the descent of the planet's mightiest rivers from the mountains to the sea, and discover new underwater worlds and wildlife as we break the ice of the world's deepest lake.
With extreme seasonal temperatures, the Arctic and Antarctic are home to the most resilient creatures, like the polar bear who must swim vast distances to avoid the ice melting beneath its feet.
Deserts cover a third of the Earth's land surface, but appear lifeless from space. A closer look reveals a different picture and unravels the secrets of desert survival in extreme conditions.
Sir David Attenborough reveals the greatest woodlands on earth, from the evergreen forests of the frozen north to the dry forests of the equator, and introduces the creatures who call it home.
The Great Plains are the vast open spaces of our planet, and while they may seem empty, they support the greatest gatherings of wildlife on Earth with millions of predators at play.
Head into the caves that harbour some of the most remarkable and bizarre animals on Earth, from the birds that build their nests out of saliva to the creatures that will never see daylight.
Oceans cover two-thirds of the planet, yet remain largely unexplored. Sir David Attenborough uncovers the most bizarre, powerful, and charismatic creatures who dwell in the depths.
Travel through the enchanted world of tropical rainforests to discover the survival strategies of its inhabitants, from the flying frog's mating orgy to the fungi that eats its victims alive.