Photo of the Day

Picture of dozens of walruses swimming through the Atlantic ocean

Walrus Migration

Atlantic walruses migrate from Russia to Svalbard, Norway, where they will spend the summer. Svalbard, an archipelago that lies between Norway and the North Pole, has seen dramatic temperature increases and ice melt in the past 50 years due to global warming.
Photograph by Paul Nicklen, Nat Geo Image Collection