简介:In the ice-gripped environment of Alaska's Admiralty Island, summer 视频offers the briefest欧美 of respites. Year-round欧美 residents such as bears and seals turn to the salmon-filled water大片ways做爰 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
David Attenborough follows the remarkable story of the discovery of fossils in the Patagonia region of Argentina which prove to belong to the largest animal to ever walk the Earth.