California is a land of extremes - tallest, deepest, highest, hottest. But in a rapidly changing and thirsty world, drought, dams and fire pose dire threats to an ecosystem connected by rivers on land, in the air and in the sea.
Hollywood may captivate, but in one of the most biologically diverse places on Earth, the real stars of California - a wild and spectacular cast of creatures in the sea and on land, from blue whales to burrowing owls - are ready for their close-up.
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