These photos and video were taken in the Russian city of Astrakhan on the evening of June 7th, 2012. (Photo by Maxim Korotshenko)

Underwater with Photographer Caelum Mero. (Photo by Caelum Mero)

“Anime Expo, abbreviated AX, is an American anime convention held in Los Angeles, California and organized by the non-profit Society for the Promotion of Japanese Animation (SPJA)”. – Wikipedia. (Photo by Jim3535)

This young boy wrestled with his emotions at the National Children’s Sumo ­Tournament in Tokyo on July 30, 2012. (Photo by AP Photo/LaPresse)

Old Heidelberg, Dog with Pipe, 1905. (Photo by Detroit Publishing Company)

Fisherwomen laying barrels with salt in preparation for herring curing, 1937. (Photo by Topical Press Agency)

A Palestinian youth practices his parkour skills at Shati refugee camp in Gaza City April 27, 2014. (Photo by Mohammed Salem/Reuters)

This undated photo shows the Arctic National Wildlife Refuge in Alaska. (Photo by U.S. Fish and Wildlife Service/Getty Images)