Photo by Paul Souders, Grand Prize and Nature Winner

National Geographic has announced the winners of its 2013 Photo Contest.

Professional photographers and amateur photo enthusiasts from over 150 countries submitted more than 7,000 entries. Photographs were entered in three categories: people, places and nature. The competition was judged on creativity and photographic quality by a panel of experts comprising National Geographic magazine Senior Photo Editor Susan Welchman; and documentary photographers Stephanie Sinclair and Ed Kashi.