Natural World

Abandoned as a baby, removed from normal gorilla family life as a youngster - so profound were the misfortunes that Titus suffered in his early years that no gorilla scientist could have predicted his eventual rise to power. His moving life story is pieced together here for the first time, based on archive film and the memories of field workers who have studied the mountain gorillas since Dian Fossey's pioneering work more than 40 years ago. At 33 years of age, Titus is not just one of the most powerful Silverbacks in Rwanda's Virunga Mountains, he is possibly the most remarkable gorilla ever known. His life story is as full of drama, intrigue and tragedy as any human soap opera. Against a stunning backdrop of misty volcanic peaks cloaked in bamboo and giant lobelia, Titus has successfully steered his family group through thick and thin. Now he is under pressure again. With his ally-turned-rival, Kuryama, jockeying for position, is the final chapter in Titus's extraordinary reign about to occur?

Beginning at the fabulous coral reef of Ningaloo in Western Australia, intrepid marine biologist Mark Meakin attempts to unravel the mysterious wanderings of the biggest fish in the sea. Whale sharks grow to over 12 metres long but are gentle, filter-feeding giants; even Mark's five-year-old son can swim alongside them. Yet no-one knows where they go once they leave Ningaloo's turquoise lagoons. Using satellite tags and photo IDs, Mark tracks them to the white coral beaches of the Seychelles and the tropical jewel of Christmas Island, where bright-red land crabs begin their annual migration. It's hard work, taking in 20 failed satellite tags and countless frustrating dives, before Mark makes a breakthrough which doesn't just add to our understanding of these huge 'dinosaur fish' but offers crucial information about how the whale sharks of Ningaloo can be protected better.

David Attenborough's entertaining romp through the world of monkeys has a serious side: for when we look at monkeys we can see ourselves. From memory to morality, from 'crying wolf' to politics, monkeys are our basic blueprint. Pygmy marmosets 'farm' tree sap; bearded capuchins in Brazil develop a production line for extracting palm nuts; white-faced capuchins in Costa Rica tenderly nurse the victims of battle; and in the Ethiopian highlands a deposed gelada baboon has got the blues.

Another stunning look at the wonders of wildlife as Natural World tonight seeks out the Gharial crocodile. This mighty reptile, which can grow up to 20ft in length and tip the scales at one ton, evolved with the dinosaurs more than 150 million years ago. However, it’s now on the brink of extinction as the largest critically endangered animal on the Indian subcontinent. Filmed over a 12-month period, reptile expert and conservationist Rom Whitaker set out on a mission to solve the mystery of why numbers have rapidly declined. Currently, fewer than 200 breeding adults live in Indian and Nepalese sanctuaries that aim to ensure the future of the species via a captive breeding programme. From the safety of your armchair, enjoy Whitaker’s fascinating footage of the Gharial.

Every time we weigh up which bottle of wine to buy, we hold the fate of nightingales, rare black storks, secretive wild cats and one of the world's most remarkable trees in our hands. It has all to do with the stopper. If it is cork, it probably came from the bark of one of the ancient cork oak trees from the Montados, in the Alentejo region of Portugal.

Wildlife film. South African naturalist Mike Rutzen is crazy about great white sharks. He never saw Jaws, so he doesn't share the terror that makes these sharks the world's most feared predator.