Augrabies Falls • 2017 • episode "S1E9" • Great Parks of Africa

58:10

The long-awaited arrival of the great migration brings opportunities and food in abundance, but it also increases conflict as every one of the Serengeti's families is put to the test. Tragedy strikes for lioness Kali, who is forced to make one of the most difficult decisions of her life. Can she return to the pride that once forced her out? Whatever she decides, it will put her cubs in danger. Shani, the zebra mother, has no choice but to cross the river, but the crocodile is waiting and the currents are treacherous. Will her foal survive? Bakari is finally forced to challenge the jealous leader of the baboon troop, but the violence of their confrontation leaves Bakari facing a devastating decision that will change his destiny. The wild dog family, led by male Jasari, is also facing a battle when Zalika and her clan of hyenas declare war on the young family, hoping to force them out of their territory. A long running feud begins. When teenage elephant Tembo behaves badly and falls out with another herd, his mother Nalla has to decide his future. How will both Nalla and Tembo handle the difficult decisions they are forced to make?

S1E4 • Serengeti • 2019 • Nature

53:45

The next programme explores the various sea-living invertebrates. In Morocco, the limestones are 600 million years old, and contain many invertebrate fossils. They fall broadly into three categories: shells, crinoids and segmented shells. The evolution of shelled creatures is demonstrated with the flatworm, which eventually changed its body shape when burrowing became a necessity for either food or safety. It then evolved shielded tentacles and the casings eventually enveloped the entire body: these creatures are the brachiopods. The most successful shelled animals are the molluscs, of which there are some 80,000 different species.

2/13 • Life on Earth • 1979 • Nature

58:46

Steve Backshall leads a team of elite explorers - including world leading underwater cave explorer Robbie Schmittner, former Royal Marine Aldo Kane and diving camera operator Katy Fraser - into the wilds of the Yucatan Peninsula in Mexico. Under the vast jungle here is the largest unexplored network of caves in the world, comprising thousands of kilometres of passageways. They are stunningly beautiful but incredibly dangerous - much of the system is under water. First the team must trek through tough, scorpion-infested jungle to camp alongside a giant sinkhole in the jungle floor - a dark gateway to an underworld full of nightmarish creatures.

Undiscovered Worlds with Steve Backshall • 2019 • Nature

59:06

David Attenborough has a passion for birds' eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe. They are strong enough to withstand the full weight of an incubating parent and weak enough to allow a chick to break free. But how is an egg made? Why are they the shape they are? And perhaps most importantly, why lay an egg at all? Piece by piece, from creation to hatching, David reveals the wonder behind these miracles of nature.

Natural World • 2018 • Nature

87:31

David Attenborough brings to life, in unprecedented detail, the last days of the dinosaurs. Palaeontologist Robert DePalma has made an incredible discovery in a prehistoric graveyard: fossilised creatures, astonishingly well preserved, that could help change our understanding of the last days of the dinosaurs. Evidence from his site records the day when an asteroid bigger than Mount Everest devastated our planet and caused the extinction of the dinosaurs. Based on brand new evidence, witness the catastrophic events of that day play out minute by minute.

2022 • Nature

58:58

Wildlife series. The team push deeper into the rainforest, enlisting the help of a tribe to find and film the birds of paradise as they perform their courtship displays.

S1E2 • Lost Land of the Volcano • 2009 • Nature