Episode 2 • 2018 • episode "S1E2" • Big Cats

10:03

For nearly 4 billion years, the continents of Earth were a lifeless wasteland. But beneath the sea, our planet was teeming with life. Many strange creatures evolved, from eel-like conodonts to voracious cephalopods, until nearly all life was wiped out in our planet’s first mass extinction.

S1E1 • Ancient Oceans • 2019 • Nature

58:10

Follows the interconnected stories of a cast of savannah animals over one year, in a bold new dramatised natural history format for BBC One. Narrated by award-winning British actor John , the series captures the high drama of the area's distinctive wildlife up close. There's love and loss, jealousy and rivalry, tragedy and triumph, as their lives entwine and dramatically unfold in the heart of this legendary land. It's the time of plenty in the Serengeti, with food in abundance, but a series of unexpected events turns families against each other and stretches relationships to breaking point. Kali a brave lioness and devoted mother of four cubs, has broken the golden rules of family life, by having cubs with an outsider. When she tries to bring the cubs home, her betrayal is exposed and she is forced into exile. Bakari, a passionate male baboon, starts a deep and jealous rivalry after the female he was devoted to is stolen away by the new, more aggressive, leader of the troop. Zalika, a young hyena, loses her mother in a terrifying attack by some rogue male lions and has to assume the leadership of her family. Somehow, she must prove herself ready for such a huge responsibility. Tembo, a teenage elephant, questions his place in the family when his mother Nalla, the matriarch of the family, gives birth to a new baby and he is sidelined. Bakari attempts to win back his lost love until tragedy strikes and Kali finds salvation from an unexpected place. Emotions run high as each of the characters struggles to cope with their worlds being turned upside down.

S1E1 • Serengeti • 2019 • Nature

45:18

Making Of (Special Fly On The Wall inserts at the end of each programme will explore, in greater detail, how the BBC's Natural History Unit was able to capture such stunning footage for the first time.)

Extra • Life in the Undergrowth • 2005 • Nature

48:08

David Attenborough narrates a natural history of the oceans. The deadly game of hide-and-seek played by the sea's charismatic hunters - whales, shark and billfish.

S1E3 • Blue Planet I • 2001 • Nature

54:08

See the extraordinary wildlife and people of the Andes. Pumas hunt guanaco, shape-shifting frogs hide in remote cloud forests and the descendants of Inca build bridges of grass. The world’s driest desert, huge salt lakes and spectacular peaks are all found in the world’s longest mountain range.

S1E3 • Kingdoms of the Sky • 2021 • Nature

59:21

The squirrel family is one of the most widespread on earth, so what is the secret to their success? There are squirrels that can glide through the air, outwit rattlesnakes and survive the coldest temperatures of any mammal. We uncover the extraordinary abilities of these cheeky characters, putting their problem solving to the test on a specially designed assault course. We team up with some of the world's top squirrel scientists who are making groundbreaking discoveries - from the fox squirrel who can remember the location of 9,000 nuts to the grey squirrel whose tree-top leaps are the basis of new designs in robotics. We also see the world through the eyes of an orphan red squirrel called Billy, as he grows up and develops all the skills he will need to be released back to the wild. It is time to meet the animal family we should never underestimate - the super squirrels.

Natural World • 2018 • Nature