Savage Island Giants • 2019

88:20

This extended special of the nature documentary series journeys from the equator to the unexplored depths, meeting the best-loved characters from the series.

S1E8 • Blue Planet II • 2018 • Nature

52:02

Groundbreaking documentary which follows a Japanese-led team of scientists as they attempt to shed light on the mysterious world of deep sea sharks. Only 50 specimens of the newly discovered 'megamouth' have ever been sighted. Over four years, scientists and film crews voyaged in midget submarines into the depths of Suruga Bay and Sagami Bay to film them. Prehistoric 'living fossil' sharks such as bluntnose sixgill sharks, goblin sharks and frilled sharks also lurk in the bay. As part of the investigation, a sperm whale carcass was placed at the bottom of the bay to attract these sharks, which were then studied and observed from the submersible vessels. Revealing in detail the previously unknown behaviour of deep sea sharks, the film unravels another of the intriguing mysteries of our planet's biodiversity. Narrated by David Attenborough.

2015 • Nature

55:01

The next instalment describes the move from water to land. The fish that did so may have been forced to because of drought, or chose to in search of food. Either way, they eventually evolved into amphibians. Such creatures needed two things: limbs for mobility and lungs to breathe. The coelacanth is shown as a fish with bony fins that could have developed into legs, and the lungfish is able to absorb gaseous oxygen. However, evidence of an animal that possessed both is presented in the 450 million-year-old fossilised remains of a fish called a eusthenopteron. Three groups of amphibians are explored.

6/13 • Life on Earth • 1979 • Nature

58:58

David Harewood narrates a documentary exploring three of the most exotic and remote islands on the planet, beginning with the unique and extraordinary wildlife of Madagascar. As the oldest island on Earth, life has had time to evolve and there are now more unique plants and animals on Madagascar than any other, with footage of ring-tailed lemurs, labord's chameleons and Decken's sifakas.

S1E1 • Earth's Tropical Islands • 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

26:40

Often referred to as the gray ghost or ghost of the mountains, this animal's rarity and elusiveness was legendary. In the past, it was known as the ounce, but today we've settled on the name snow leopard.

S1E2 • The Secret Lives of Big Cats • 2019 • Nature