简介:In 资源the ice-gripped environment of Alaska's Admiralty Island高清, summer offers the briefest of respit不卡es. Year-round residents such as bears欧美 and seals turn t在线播放o 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.详情