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)

Some wave over the rainbow – a splash of colour is captured in spray over the sea wall at Totland Bay on the Isle of Wight off the south coast of England on February 16, 2022. (Photo by Jamie Russell/Bournemouth News)

A boy kicks a football in Dudley Page Reserve as storm clouds gather over the city skyline on September 30, 2021 in Sydney, Australia. The Bureau of Meteorology has issued severe storm warnings for the city. (Photo by Mark Evans/Getty Images)

Wakodahatchee wetlands, Delray Beach, Florida, US. Equipped with sinewy necks and spear-like bills, great blue herons can lunge with fearsome speed to strike their aquatic prey. Adults will also employ rapid stabbing motions as one aspect of their complex courtship displays; they’re seemingly dangerous moves, but fitting to the intensity of mating season. (Photo by Melissa Rowell/Audubon Photography Awards)

Over the past three years, Los Angeles-based photographer Dotan Saguy has spent hundreds of hours documenting the diverse culture, people and pageantry of the iconic Venice Beach boardwalk. He was irresistibly drawn to the free-spirited, anti-materialistic and inclusive nature of the world-famous location, which he found to be a breath of fresh air in contrast to Los Angeles’s sometimes homogenized, celebrity-obsessed culture. (Photo by Dotan Saguy)

A couple walks across the Francis Scott Key Bridge as the setting sun lights up the clouds in Washington, Friday, October 30, 2020. (Photo by J. David Ake/AP Photo)

Models present creations from the Emporio Armani Fall/Winter 2024/2025 collection during Fashion Week in Milan, Italy on February 22, 2024. (Photo by Alessandro Garofalo/Reuters)

Residents wade across floodwaters after a week typhoon Koppu battered Calumpit town, Bulacan province, north of Manila October 24, 2015. Typhoon Koppu, that dumped heavy rains on the northern Philippines, killing 58 people as it flattened houses and destroyed crops, was petering out on Wednesday, weather officials said. (Photo by Romeo Ranoco/Reuters)