简介:In the ice-gripped environment of Alaska's Admiralty Island, summer offers the briefest of respites. Y双丝ear-round residents s交足uch as bears and seals turn to the salmon-filled waterways for sustenance. Meanw小乌hile, migrants descend in droves, from humpback whales to over 140 million s黑白eabirds--almost half the在线观看 birds in the Northern Hemisphere.详情