National Geographic announces annual photo contest winners

"Glacial ice washes ashore after calving off [a] glacier on Iceland's eastern coast. During the waning light of summer this image was created over the course of a 4-minute exposure while the photographer backlit the grounded glacial ice with a headlamp for 2 of those 4 minutes."

"The winter gloomy day worked to my advantage to create this eerie feeling of the famous landmark Eiffel tower."

"A race that follows in the path of the famous explorer Roald Amundsen brings the contestants to the Hardangervidda Mountainplateu, Norway. ... [The] exact same route Amundsen used to prepare for his South Pole expedition in 1911 is still used by explorers today."

"Chipping ice off an iceberg is a common way for the Inuit community to retrieve fresh drinking water while on the land. During a weekend-long hunting trip, we came upon this majestic iceberg frozen in place. It was a perfect opportunity to grab enough ice and drinking water for the remainder of the trip.'

"I was surrounded by thousands of fish that moved in synchrony because of the predation that was happening. It was an incredible experience."

"With his exceptional hearing, a red fox has targeted a mouse hidden under 2 feet of crusted snow. Springing high in the air he breaks through the crusted spring snow with his nose, and his body is completely vertical as he grabs the mouse under the snow."

"Stilt fishing is a typical fishing technique only seen in Sri Lanka. The fishermen sit on a cross bar called a petta tied to a vertical pole planted into the coral reef."

"I was very lucky of sighting and photographing Malaika, the name of female Cheetah, and her cub."

"The subject's name is Busaba, a well-cared-for Indochinese Tigress, whose home is at Khao Kheow Open Zoo, Thailand."

"The Matterhorn ... at full moon."

"This photo of a wild, Alaskan, brown bear digging on a game trail was taken with a homemade motion-controlled triggering device hooked up to my DSLR."

"Yayasan Galuh Rehabilitation Center is an impoverished mental health facility based in Bekasi, Indonesia, that hosts over 250 patients. Most come from poor families no longer interested in managing their condition, or are unable. Some patients are homeless, deposited after being taken off streets by police. ... Over one-third of the patients are shackled in chains."