This year’s nature-photography competition attracted more than 8,000 entries in different categories celebrating the natural world: Animal Behavior, Camera Traps, Landscapes, Small World, The Night Sky, Underwater, Urban Wildlife, Wild Portraits, and an Under-17 award. Organizers at Nature TTL were once more kind enough to share some of the winners and runners-up below. Captions were written by the photographers and lightly edited for style.