Formed from the remains of a 2.5 million-year-old imploded volcano, the Ngorongoro crater is a study in contradictions: On one hand, it's a self-sustained and plentiful land that provides for the many animals that call it home. Conversely, its isolation threatens the existence of many of its key species. What does the future hold for this unique habitat?
Ch1. Oceans In Cape Verde, Gordon starts the adventure with a look at one of the world's largest populations of nesting loggerhead turtles. He then heads to the Bahamas with Caribbean reef sharks, California to see young elephant seals and the British Isles to attach featherweight cameras to a squadron of gannets. Ch2. Australia In New South Wales, Gordon encounters a marsupial facing a complex set of challenges when he meets a population of kangaroos that are being pushed to the very brink by a coastal development boom. How are they surviving on the edge of this urban expansion? Gordon meets the scientists driven to find out more about what the roos are feeding on as they are pushed onto the coastal fringes. As we become immersed in their world, we get a better understanding of kangaroos' social lives and the impact of human encroachment on their diet. In southern Australia, we head to Adelaide, where one of the team's toughest challenges yet is to create the lightest of cameras to find out what the lure of the big city is to a colony of newly arrived fruit bats. Their appearance is a bit of a puzzle. Are they a threat to the local commercial fruit crops or have they found other ways to adapt to city life? For the first time ever, the fruit bats take our cameras up above the cityscape, showing us a unique view of their nocturnal worlds while providing information crucial to their future. In Queensland, we help scientists find out if koalas really deserve their dozy daytime reputation when we join researchers at a reserve to discover some incredible revelations surrounding their night-time manoeuvres. The team's tech allows us to shadow them after sundown, unveiling their remarkable agility and surprising navigational skills. Specially designed with tree-hugging in mind, koalacams offer an insight which could help koalas as we find out what they need to survive - not just here, but elsewhere in the country.
In the heart of south-east Asia lies the tropical island of Borneo. Twice the size of the British Isles, it is the third largest island on earth and home to possibly the greatest diversity of life of any island. Its huge variety of habitats, from bustling coral reefs and ancient jungles to towering mountains, have given rise to more than 60,000 species of plants and animals - many found nowhere else on Earth. This documentary covers Borneo's rich abundance of wildlife, from frogs to orang-utans.
Asia - the most varied and extreme continent - stretching from the Arctic Circle to the equator. Walrus gather in huge numbers in the frozen north and brown bears roam remote Russian volcanoes. This is a world of the rarely seen, from yeti-like monkeys in the mountain forests of China to the most bizarre predator in the baking deserts of Iran. Asia is the largest of all continents but it seems there’s not enough space for wildlife. The deep jungles provide sanctuary for the last few Sumatran rhino.