US Government photo: “A polar bear cub curiously stands on its hind legs while its mother stays nearby. The two bears approached within 200 meters of the ship. Image ID: expl0395, Voyage To Inner Space – Exploring the Seas With NOAA Collect Location: Alaska, Beaufort Sea, North of Point Barrow. Photographer: Kelley Elliott Credit: Hidden Ocean 2005 Expedition: NOAA Office of Ocean Exploration.” Scan of 2 d image in the public domain believed to be free to use without restriction in the US.