What do double rainbows, baby penguins and “ninja” kangaroos have in common? They’re the focus of some of the best images submitted for the 2012 National Geographic Photo Contest.

National Geographic celebrates its 125th anniversary next year and Ken Geiger, the magazine’s deputy director of photography, said he wants anyone with a camera to become a part of that legacy.

“Our world is a wondrous place. It doesn't need the latest digital enhancement filter to make it any more special. Use your camera, your skill, your luck of being in the right place at the right time to make real and incredible images,” he said. “Use this contest as your platform to share your vision and amaze the world.”

Judges will look at creativity, photographic quality and authenticity of the content across three broad categories: people, places and nature. The magazine will feature the best photographs from each category as well as the $10,000 grand-prize winning shot.

With one month left until the contest closes, National Geographic was kind enough to share a sample of some of their favorite submissions with IBTimes. Scroll down to have a look, and be sure to check out all the latest photos or enter the contest yourself before Nov. 30.