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- In the Amazon forest, the largest rainforest on Earth, animals must deal with high rainfall and periodic flooding. They have to find clever ways to survive. When ponds in Sri Lanka dry out at the height of summer they expose the last remaining fish to hungry crocodiles and storks. But when the banquet is over, predators must find food elsewhere ¬. In the desert of Namibia, rivers are mostly desiccated beds of sand. But sand grouse, Oryx and giraffes find the last remaining pools of water. Drought can also be live-giving: along the sand banks of the fast evaporating Amur River, terns build their nests. Here, their offspring are safe from predators such as foxes or boars; but ironically, not from their own kind.
- Orangutans forage early in the day inside the rainforests of Sumatra - before the heat becomes unbearable. When the sun reaches its zenith all activity stops and the primates retreat to their shady nests below the canopy to wait out the heat. Winter in northern Yukon Territory - a frozen white landscape stretches into the distance. But high up on the Arctic Circle, one unique river still flows - because it's fed by an underground spring. Chum salmon exploit this anomaly. They travel thousands of kilometres to spawn here - later than anywhere else. And grizzlies exploit the spawning salmon. They brave temperatures 20 degrees below - to gorge themselves on fresh fish and fatten up for the long, cold, northern winter.
- The highest and the lowest places of our planet also offer niches where life thrives. High up in the Alps, animals have developed particular strategies to survive. Short, hot summers follow long, hard winters - seasonal extremes that test the endurance of Alpine inhabitants. Sri Lanka's cloud forests are home to an army of specialists. At 1,500 metres above sea level the forests are high enough to bring winter frosts. While life in higher altitudes often is accompanied by coldness and a lack of oxygen, animals and plants that prefer the sweet life at sea level must face other challenges. Pacific salmon have been coming to the west coast of Canada for around six million years. On the island of Palau, another perilous journey begins. At Jellyfish Lake huge shoals of golden jellyfish make their daily trip upwards from the lake's toxic abyss to the sun-drenched surface water.
- The Arctic is changing - rising temperatures are melting the supposedly "eternal ice" of the North Pole region. In view of global warming, it seems only a matter of time before the Arctic waters are completely free of ice. This change has dramatic effects. The polar bear was for a long time the largest and most dangerous hunter in the Arctic. But now that the ice is increasingly disappearing and this loss is making life difficult for the polar bear, another is taking over the top of the food chain: the killer whale, or orca, better known - or rather infamous - as the "killer whale". The Terra Mater documentary "Orcas - Advance into the Arctic", which was produced as a co-production with Thirteen and NDR Naturfilm/Doclights, presents the massive changes taking place in the ecologically particularly sensitive polar region. The two main protagonists of the Arctic animal world on land and in the sea - the polar bear and the orca - serve as an impressive example. In addition to scientists who observe and study the increased appearance of orcas in the Arctic, the film team also relies on reports from the local population: experienced Inuit hunters tell of their encounters with the notorious "killer whales". The shrinking ice allows the orcas to advance further The reason for the more frequent appearance of the distinctive marine mammals is obvious: in summer, the ice in the Arctic has been retreating further and further for years - this opens the way for the orcas to new, previously inaccessible waters in the polar region. The killer whales owe their name to their towering dorsal fin: this prevents the animals from covering long distances under the ice cover - because of the fin they can hardly break through the ice when they have to surface to get some air. Given the shrinking ice areas, however, the orcas can now advance much further into the Arctic waters. During the filming of this documentary, a professional film crew was able to film orcas in the Arctic for the first time ever. A key scene is the collective, coordinated hunt of a group of orcas for narwhals - an astonishing behavior that even experts have never observed before. In the Arctic, however, polar bears are finding it increasingly difficult to catch their original main food: seals. The shrinking ice surfaces are increasingly preventing the bears from getting close enough to the seals on the ice to surprise and attack them. The "white giants" are forced to adapt In recent times, polar bears have been forced to increasingly use other sources of food when looking for food. Another scene, never filmed before, offers an unusual sight: in this case, it is not grizzly bears fishing for char in a Canadian river - but polar bears... However, the polar bears are still very clumsy due to a lack of experience. In order to survive in the long term, the "white giants" will have no choice but to adapt. In any case, the polar bear has already lost its position at the top of the Arctic food chain - to the orca, the new ruler of the Arctic Ocean.
- Journey from the secret world of Canada's wettest and most biologically diverse landscape, the temperate rainforest to the snow-capped peaks of the Rocky Mountains. The stories are intimate and epic: from wolves that fish for salmon to the thrilling sounds of head-butting male big horn sheep, to ice-covered grizzly bears living near the Arctic Circle. The ancient coastal forests hide rarely told stories of human and wildlife relationships that have co-existed for thousands of years.
