Summer

This episode follows the short polar summer: the sun does not set for months and the ice is largely gone. Animals highlighted in this episode include the polar bear (Ursus maritimus), the red phalarope (Phalaropus fulicarius), the Arctic tern (Sterna paradisaea), the common eider (Somateria mollissima), the snowy owl (Bubo scandiacus), the Lapland bunting (Calcarius lapponicus), the Arctic wolf (Canis lupus arctos) hunting for muskoxen (Ovibos moschatus), the king penguin]] (A. patagonicus), the Antarctic fur seal (Arctocephalus gazella), the crabeater seal (Lobodon carcinophagus), the Antarctic krill (Euphausia superba), the humpback whale (M. novaeangliae), the Antarctic minke whale (Balaenoptera bonaerensis) being hunted by killer whales, and the Adélie penguin being hunted by south polar skua (Stercorarius maccormicki).