Wild Slovakia with Nigel Marven 2

Every year, on the steppes of the Serengeti, the most spectacular migration of animals on our planet: Around two million wildebeest, Burchell's zebra and Thomson's gazelles begin their tour of nearly 2,000 miles across the almost treeless savannah. For the first time, a documentary captures stunning footage in the midst of this demanding journey. The documentary starts at the beginning of the year, when more than two million animals gather in the shadow of the volcanoes on the southern edge of the Serengeti in order to birth their offspring. In just two weeks, the animal herd's population has increased by one third, and after only two days, the calves can already run as fast as the adults The young wildebeest in this phase of their life are the most vulnerable to attacks by lions, cheetahs, leopards or hyenas. The film then follows the survivors of these attacks through the next three months on their incredible journey, a trip so long that 200,000 wildebeest will not reach the end.

Deep in Papua's tropical forests, the Northern Cassowary (New Guinea's largest native animal) remains an enigma—a creature rarely seen, yet vital to the ecosystem. Often regarded as dangerous, this large, flightless bird is crucial for forest regeneration through seed dispersal. With habitat loss and hunting threatening their survival, efforts to protect cassowaries are more urgent than ever.

By land, by air, and by sea, viewers can now experience the struggle that millions of creatures endure in the name of migration as wildlife photographers show just how deeply survival instincts have become ingrained into to the animals of planet Earth. From the monarch butterflies that swarm the highlands of Mexico to the birds who navigate by the stars and the millions of red crabs who make the perilous land journey across Christmas Island, this release offers a look at animal instinct in it's purest form.

Coral reefs are believed by many to have the highest biodiversity of any ecosystem on the planet. A lot of the life found here can seem very alien at first, they occupy less than 1 percent of the ocean floor but yet are home to more than 25 percent of all marine life. Warm water reefs typically come to mind when thinking of the Pacific Ocean and the Caribbean Sea, these reefs are very well known but they don’t just occur in warm waters. In this one hour special, we are brought into this alien environment and discover for ourselves a strange, hidden world that is simply abundant with life, ranging from the weird to the wonderful.

This documentary, the final film directed by Frank Capra, explores America's plans for the future of space exploration. It was produced by the Martin-Marietta Corporation for exhibition in the Hall of Science at the 1964 New York World's Fair.

Described as being a film about determination, danger and the ocean’s greatest depths, James Cameron's "Deepsea Challenge 3D" tells the story of Cameron’s journey to fulfill his boyhood dream of becoming an explorer. The movie offers a unique insight into Cameron's world as he makes that dream reality – and makes history – by becoming the first person to travel solo to the deepest point on the planet.

Gripping, hi-octane adventure as intrepid underwater explorer Jacquie Cozens and experienced filmmaker Mike deGruy attempt to uncover the truth behind the legendary Red Demon: an enormous flesh-eating squid. This film was first broadcast: 12 Sep 2004

Wildlife filmmaker Sigurd Tesche delves into the mysterious world of the moray eel to reveal the secrets of this supreme underwater predator and the truth behind its ugly reputation.

Whales have long been a profound mystery to us. They live in a world so removed from our own that we can barely imagine their lives. Their environment is different, their senses are different, their relationships are different. How might such almost alien creatures see the world?

Lynx, fallow deer, kingfishers and otters - experience the rich wildlife and the changing seasons throughout the year in Småland's extensive forests and lush pastures. A Swedish nature film by nature photographer Jan Fermergård that depicts the rich wildlife and the changing seasons in the vast forests and cultural landscapes of Småland over the course of a year.

“Entourage” star Adrian Grenier ventures to Cocos Island off the shore of Costa Rica to bring attention to the plight of endangered sharks who are being threatened by poachers and ocean pollution.