Catalogue information
CAVES Caves shows the underground worlds where life is not dominated by sunlight. In this mysterious darkness lurks a wealth of incredible crystals and bizarre animals, some of which were first filmed here. DESERTS Deserts look like lifeless plains, but in fact they are varied ecosystems, home to rare animals and spectacular changes in the landscape: fierce sandstorms, the short flowering of life and a plague of locusts that only occurs once every 30 years. ICE WORLDS Ice worlds undergo incredible transformations from total darkness during the Arctic winter to summer, when the sun never sets. Planet Earth shows the effect these extreme seasons have on animals such as whales, penguins, walruses and the mother polar bear and her two cubs from the first episode. How are they doing two years later?
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