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湿地被称为“地球之肾”，是富有生物多样性的生态系统，是人类最重要的生存环境之一。本片首次以纪录片的方式全面梳理中国的湿地现状及保护成效，通过极致影像、诗意解说呈现中国多样的湿地生态，用科学的视角解读湿地对人类的重要性。。In the ice-gripped environment of Alaska's Admiralty Island, summer offers the briefest of respites. Year-round residents such as bears and seals turn to the salmon-filled waterways for sustenance. Meanwhile, migrants descend in droves, from humpback whales to over 140 million seabirds--almost half the birds in the Northern Hemisphere.。