The fourth annual BigPicture Natural World Photography Competition aims to celebrate the diversity of life on Earth, and encourages people to protect and conserve it. Here: “The Salmon Catchers”. Terrestrial Wildlife. To capture this view of a mother grizzly bear and her cub, photographer Peter Mather set up a camera trap on a log that he knew the bears tended to traverse while fishing for salmon, in the Yukon River watershed in Canada. (Photo by Peter Mather/BigPicture Natural World Photography Competition 2017)

In this photo taken June 3, 2009, a female North Korean soldier looks out from behind a barbed-wire fence around a camp on the North Korean river banks across from Hekou, northeastern China's Liaoning province. North Korea's top court has convicted two U.S. journalists, and sentenced them to 12 years in labor prison, the country's state news agency reported Monday. (Photo by Ng Han Guan/AP Photo)

A woman poses by “Leaf Spirit” by Simon Gudgeon at the FORM 24 show at Sculpture by the Lakes, on April 02, 2024 in Dorchester, England. The award-winning sculpture show runs from April 2 to June 1, with works by more than 35 leading contemporary sculptors exhibited throughout 26-acres of lakes, rivers, gardens, and woodlands as well as in the Gallery and The Retreat. FORM includes a series of talks and events to accompany the exhibition, including “Meet the Artist” Q&A sessions with exhibiting sculptors, workshops and demonstrations. (Photo by Finnbarr Webster/Getty Images)

Key Gompa (also spelled Ki, Kye or Kee) is a Tibetan Buddhist monastery located on top of a hill at an altitude of 4,166 metres (13,668 ft) above sea level, close to the Spiti River, in the Spiti Valley of Himachal Pradesh, Lahaul and Spiti district, India. It is the biggest monastery of Spiti Valley and a religious training centre for Lamas. It reportedly had 100 monks in 1855.

The Rainbow Warrior III, the newest ship of the enivornmental conservation organization Greenpeace, makes its way to port on the Elbe River on October 20, 2011 in Hamburg, Germany. The Rainbow Warrior III, 53 meters long, designed by Greenpeace and built in Poland and Germany, is a EUR 23 million project completed last week. (Photo by Sean Gallup/Getty Images)

“Cormorant fishing is a traditional fishing method in which fishermen use trained cormorants to fish in rivers. Historically, cormorant fishing has taken place in Japan and China from around 960 AD. and recorded from other places throughout the world”. – Wikipedia

Photo: A cormorant raised by a fisherman catches a fish on a canal on November 27, 2007 in Xitang Town of Jiashan County, Zhejiang Province, China. (Photo by China Photos/Getty Images)

Fireworks light up the London skyline and Big Ben just after midnight on January 1, 2012 in London, England. Thousands of people lined the banks of the River Thames in central London to see in the New Year with a spectacular fireworks display. (Photo by Peter Macdiarmid/Getty Images)

Ice Road Truckers is a reality television series that premiered on History on June 17, 2007. It features the activities of drivers who operate trucks on seasonal routes crossing frozen lakes and rivers in remote Arctic territories in Canada and Alaska. Later series were focused on Alaska's improved but still remote Dalton Highway which is mainly snow covered solid ground.