The polar struggle to survive is even harder in winter, missing a single rare prey can be lethal. Well-adapted anatomy is crucial, but also tricks such as isolation with snow or preys' fur. The Antarctic is nearly deserted, except for seals and emperor penguins, even the slightly milder Artic is left by most species, failing to do so is a gamble which can exterminate entire populations.
Stars: David Attenborough, Alec Baldwin, Chadden Hunter
Writer(s): Paul Spillenger