11/11 The final episode looks at the largest of all habitats - the ocean.
10/11 David Attenborough reveals the greatest woodlands on earth.
9/11 David Attenborough narrates the epic journey of a humpback whale and calf.
8/11 David Attenborough's natural history series looks at tropical rainforests.
7/11 David Attenborough looks at the world's great plains.
6/11 David Attenborough examines the frozen worlds of the Arctic and Antarctic.
5/11 A look at earth's most spectacular deserts, revealing the secrets behind desert survival.
4/11 Featuring, among others, the Cave of Swallows in Mexico and Deer Cave in Borneo.
3/11 Following the descent of the planet's mightiest rivers from their sources to the sea.
2/11 A look at mountains, from their origins at earth's lowest places to the summit of Everest.