Last month, we sadly had to say goodbye to Berlin, the oldest polar bear in captivity in the
Zoopedia: Polar Bear – Lewis Twiby's Past and Present
Polar Bears
Polar bears move into abandoned Arctic weather station – photo essay, Arctic
Our Mission, History, and Values
File:Polar Bears, Denver Museum of Nature and Science.jpg - Wikipedia
Photographing Arctic Wildlife During Summer in Svalbard
Polar Bears International House
Aurora® - Destination Nation™ - 12 Polar Bear
Polar Bear Horizon - Smithsonian Oceanic Collection
Education Center Polar Bears International