The Full Circle • 2014 • episode "S1E7" • Life Story

28:28

This episode focuses on the Jurassic period, a time when the first giant killers stalked the Earth and lurked in the seas; a time when the slightest advantage meant the difference between life and death. In North America the iconic allosaurus, an ambush hunter with a lethal bite, dominated. Not even the heavily-armoured stegosaurus was safe from this killer, and incredible evidence reveals a glimpse of a vicious battle between these two giants. Life in Jurassic oceans was no easier; in 2008, a fossil was dug out of a frozen island high in the Arctic. It was a colossal marine reptile, twice as big as most ocean predators, at 15 metres long and weighing about 45 tonnes. This was Predator X. Its skull alone was nearly twice the size of a tyrannosaurus rex's, and its bite force unmatched by anything in the Jurassic seas. The balance of power between predator and prey is a fine one, as prey continually evolves different ways to avoid predators. But for the most successful and enduring predators, the battle to survive has always been tipped in their favour.

S1E4 • Planet Dinosaur • 2011 • Nature

47:24

The frozen poles are home to the planet's ultimate survivalists, including polar bears, penguins and Arctic wolves; their world is changing fast -- breaking apart under their feet -- and their resilience will be tested beyond the extreme.

S1E6 • Hostile Planet • 2019 • 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

37:53

Deep beneath the water's surface, the world's largest predator -- the Mosasaurus -- lies in wait to ambush unsuspecting prey.

S2E4 • Prehistoric Planet • 2023 • Nature

50:00

The Auckland Islands are an isolated archipelago of islands far south of New Zealand. They might seem bleak, but they are a surprising sanctuary for wildlife. In summer, hordes of giant sea lions descend upon a desolate beach, and testosterone-driven males begin bloody battles for mating rights. When the pregnant females return to give birth on the beach, chaos ensues. The pups are always in danger of being squashed by overly eager males. Some of the rarest penguins on the planet, the yellow-eyed penguins, are also breeding here and must constantly evade the huge brawling male sea lions. Southern royal albatross, giant petrels and skuas are other species that go to extremes to ensure their offspring’s survival. The drama of summer in the sub-Antarctic islands peaks as the sea lion pups dare to take their very first ocean swims.

2019 • Nature

48:03

The sea turtle is one of the oldest animals on Earth. These ancient mariners pre-date the dinosaurs and have existed for over 100 million years, but now all seven of the surviving species are endangered.

S1E5 • Arabian Seas • 2018 • Nature