One of the world's most prestigious travel photo competitions, the National Geographic Traveller Contest 2015, is in full swing - and some of the entries are extraordinary, as these images show.
Think you've got what it takes to win? You can enter the contest until midnight on June 30. The grand prize is an eight-day National Geographic Photo Expedition to Costa Rica and the Panama Canal for two.
National Geographic Traveller Contest 2014: Photos
Lovers of Light Photography comptition 2015: Finalists revealed