简介:In the ice-gripped environ70岁ment of Alaska's Admiralty Island, summer 老太offers the briefest of respites开给. Year-round residents such as bears and se腿岔als turn to the salmon-filled waterways for sustenance. Meanwhile, migrants descend in droves, from humpback whales to o老头ver 140 million seabirds--almost half the birds in the Northern Hemisphere.详情