Professional and amateur photographers can enter a contest.
Photographs submitted for judging have the chance to appear in an upcoming edition of National Geographic. The complete guidelines for submitting photos are available here.
Each day, editors pick a dozen top photos that are then voted on by readers of the website to arrive at the best photo of the month.
Photographers from all over the world may participate, but they must be over the age of 18. Photos can be digital or digital scans and only one entry is permitted per person in the monthly contest. All winners retain ownership of copyright.
The submission deadline is February 14.
For more information, please visit nationalgeographic.com.