Grasslands: In Plain Sight • 2021 • episode "S1E1" • The Mating Game

58:19

Going down into these narrow flooded passageways is not for the faint-hearted but, with only an estimated one percent of the caves explored, it is an opportunity for the team to write themselves into cave diving history, by pushing further in than anyone has before. This is a challenge that tests even the most accomplished cave divers. Steve must face the terrors of being lost in an underwater silt cloud in a cave. But there is a bigger issue at stake. All life in the Yucatan depends on the fresh water in this network of caves, but it's being contaminated by human development. With every metre the team maps, it adds to the knowledge of the system, which, in turns, helps protect it for future generations.

Undiscovered Worlds with Steve Backshall • 2019 • Nature

73:33

A cinematic journey of sound and nature that explores the beauty of the upper world. With advancements in technology, venturing to the peak of a mountain is an easier feat than it was three centuries ago.

2017 • Nature

20:57

A look at what could make an animal vanish into thin air, what could cause the sea to take on an eerie glow, and what event would bring killer whales together in huge numbers.

S1E8 • Nature's Strangest Mysteries: Solved • 2019 • Nature

5:27

What is it that makes things alive? What if we made robots that could sustain themselves? What if they could mine metals or recycle old robots, reprogram and remake themselves? There's nothing there we would traditional call alive, but they would have at least have the essence of this perpetual rube Goldberg machine.

This Place • 2014 • Nature

57:56

The first programme shows how sharks are the ocean's great predators, living in every ocean and hunting in every way. Blacktip sharks hunt in huge packs and herd fish into baitballs, tasselled wobbegongs are ambush hunters, Greenland sharks live under the arctic ice, and whitetip reef sharks are the masters of hunting at night. The finale shows the great white in its hunt for fur seals off the coast of South Africa.

1/3 • Shark: Beneath the Surface • 2015 • Nature

49:11

Raising children is no easier in the air as it is on the ground, as bird parents care for, defend, and even kill their young.

S1E9 • The Life of Birds • 1998 • Nature