Favites coral polyps feeding at night and fluorescing when illuminated by ultraviolet light, Sabah, Borneo, Malaysia (© Louise Murray/Visuals Unlimited, Inc.)(Bing United States)
Yellow-bellied marmot in Yellowstone National Park, Wyoming (© George Sanker/Minden Pictures)(Bing United States)
Reflection of City Hall, Stralsund, Germany (© Nico Stengert/Novarc/Corbis)(Bing United States)
Le Morne Brabant mountain and islet, Mauritius (© Ocean/Corbis)(Bing United States)
Ice sculptures at Sapporo Winter Festival, Japan (© Shayne Hill Xtreme Visuals/Getty Images)(Bing United States)
Blue wildebeests on the Musabi Plains in the Serengeti National Park, Tanzania (© Adrian Bailey/Aurora)(Bing United States)
Iceberg Skating Palace, Sochi, Russia (© Lebedev Artur/Corbis)(Bing United States)
Tuatara on North Brother Island, New Zealand (© Frans Lanting/Corbis)(Bing United States)
The Beatles depicted on a metal gate on Penny Lane, Liverpool, England (© Chris Brink/SuperStock)(Bing United States)
Ice in Jökulsárlón, a glacier lagoon in southeast Iceland (© Matteo Colombo/Getty Images)(Bing United States)
Harp seal pup at the Gulf of St. Lawrence, Canada (© Mitsuaki Iwago/Corbis)(Bing United States)
Erin Hamlin competing in luge singles in Sochi, Russia (© Julian Finney/Getty Images)(Bing United States)
Star horseshoe worm on a hump coral reef off the Solomon Islands (© Chris Newbert/Corbis)(Bing United States)
View of the Prismas Basálticos in Huasca de Ocampo, Hidalgo, Mexico (© Marcos Ferro/Aurora Photos)(Bing United States)
Engadin Skimarathon in Engadin, Switzerland (© Stephan Zirwes/Gallery Stock)(Bing United States)
Profile of George Washington at Mount Rushmore National Memorial, South Dakota (© Visions of America/SuperStock)(Bing United States)
Gold medalists Meryl Davis and Charlie White of the United States celebrate during the flower ceremony for Figure Skating Ice Dance at the 2014 Winter Olympics, February 17, 2014, Sochi, Russia (© Ryan Pierse/Getty Images)(Bing United States)
Stars arc over Lake Hallstatt, Austria (© Getty Images)(Bing United States)
Lucky Bay, Cape Le Grand National Park, Australia (© Ocean/Corbis)(Bing United States)
Caucasus Mountains near Sochi, Russia (© David Trood/Getty Images)(Bing United States)
Lightning storm over Grand Canyon National Park, Arizona (© Scott Stulberg/Corbis)(Bing United States)
Aerial view of Wall Street, New York City (© Cameron Davidson/Corbis)(Bing United States)
African wild dogs in Botswana (© Getty Images)(Bing United States)
Horsetail Fall at sunset seen from Taft Point, Yosemite National Park, California (© Josh Miller/Aurora Photos)(Bing United States)
