简介:In the ice-gripped en十分钟vironment of A视频laska's Admiralty Island, summer offers the briefest of respites.在线 Year-round resid观看ents such as bears and seals turn to the salmon-filled 免费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