简介:In the ice-gripp高清ed environment of Alaska's免费 Admiralty Island, summer offers t观看he briefest of respites. Year-round residents such as bears and seals turn to the salmo嘟嘟n-fill嘟嘟ed 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