Fungi: The Web of Life • 2023

59:22

Liz Bonnin presents a controversial and provocative episode of Horizon, investigating how new scientific research is raising hard questions about zoos - the film explores how and why zoos keep animals, and whether they need to change to keep up with modern science, or ultimately be consigned to history. Should zoos cull their animals to manage populations? Liz travels to Copenhagen Zoo, who killed a giraffe and fed it to the lions, to witness their culling process first hand. They think it is a natural part of zoo keeping that is often swept under the carpet. Should some animals never be kept in captivity? In a world exclusive, Liz visits SeaWorld in Florida and asks if captivity drove one of their orcas to kill his trainer. But could zoos be the answer to conserving endangered species? Liz examines their record, from helping breed pandas for the wild to efforts to save the rhinos. She meets one of the last surviving northern white rhinos and discovers the future of this species now lies in a multimillion-dollar programme to engineer them for stem cells. Veteran conservation scientist Dr Sarah Bexell tells Liz the science of captive breeding is giving humanity false hope.

Horizon • 2016 • Nature

59:00

The largest gorilla family in the world is starting the perilous journey down to feed on the fresh shoots of bamboo. They run the risk of being caught in illegal snares and Cantsbee, the dominant silverback, will have his work cut out keeping them all safe, especially those closest to him. Meanwhile on the other side of the Rwandan volcanoes a young gorilla has been deserted by her mother. She turns to her silverback father for guidance and protection, but is he up to the job? In Uganda, Marembo the teenage silverback has come of age. He has lived 15 years under the watchful eye of dominant silverback Rukina but now feels it is time to make the break on his own.

S1E1 • Mountain Gorilla • 2010 • Nature

37:12

A documentary on insect life in meadows and ponds.

S1E1 • Microcosmos • 1996 • Nature

45:38

The story of water's miraculous arrival onto our planet and its pivotal role in the survival — and amusement — of a herd of elephants.

S1E5 • Our Universe • 2022 • Nature

58:56

Diablo the giant otter lives in a lake in the jungles of Peru, with his unruly family of six cubs. Even at the tender age of six months, they need to learn how to survive in this dangerous paradise. Their dad teaches them to swim and eventually to catch piranha for themselves, but they must also learn to stay away from the neighbours from hell - the giant caiman. These large members of the crocodile family are a real threat to the giant otter family and Diablo must go to extraordinary lengths to try to protect his cubs. Charlie Hamilton-James returns to the place he first filmed Diablo. Following the family over several months, sometimes in very difficult conditions, he discovers how perilous a home this is for the cubs and watches them develop under the careful guidance of their father. He also films remarkable scenes of the giant otters fighting caimans.

Natural World • 2013 • Nature

58:11

Coral reefs are home to a quarter of all marine species. Survival in these undersea mega-cities is a challenge with many different solutions. A turtle heads to the reef's equivalent of a health spa - but she must use trickery to avoid the queue. A remarkable Grouper uses the fish equivalent of sign language to collaborate with an octopus, flushing their prey out of hiding holes. A metre-long, ferocious-jawed Bobbit Worm hides in its tunnel. Monocle Bream retaliate by squirting water to expose its sandy lair.

S1E3 • Blue Planet II • 2017 • Nature