Clinton Berry took this closeup of a penguin with a GoPro camera near Casey Station in Antarctica.
"I studied the movements of the penguins for weeks," Berry writes. "They walked in the same area almost every day. We would get maybe a dozen or less going by. The day this was taken there were over 60 penguins. It was a bit of luck involved too."
This is just one of twenty photographs that made not only National Geographic’s Photo of the Day in 2015, but were selected as the top pictures of the year. See them all in a slideshow at the magazine’s website. -via HuffPo