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)

Frog legs it! Indonesian flying frog tries to hitch a ride on snail's back before realising it would be quicker to hop it alone. A tiny frog struck up an unlikely friendship with a giant African land snail after clambering onto its shell to catch a ride. (Photo by Hendy Mp/SOLENT/Visual Press Agency)

American model and television personality Kendall Jenner attends the Tiffany & Co. Paper Flowers event and Believe In Dreams campaign launch on May 3, 2018 in New York City. (Photo by Jamie McCarthy/Getty Images for Tiffany & Co.)

In this September 9, 2018 photo, a diver holds onto his catch of lobsters during a fishing journey in the Miskito coast near Cay Savannah, Honduras. A diver makes 75 lempiras ($3) per pound of lobster. An average 10-pound daily haul of lobster is a windfall for people in one of the most impoverished regions of the Americas, so many take the risk, and many suffer for it. (Photo by Rodrigo Abd/AP Photo)

People in colorful costumes perform acrobatics for drivers waiting at red lights in Nairobi, Kenya on February 20, 2024. (Photo by Gerald Anderson/Anadolu via Getty Images)

McKensi Pascall is painted by artist Tom Sebazco at Human Connection Arts 8th Annual NYC Body Painting Day in Union Square Park on Sunday, July 25, 2021 in New York. (Photo by Brittainy Newman/AP Photo)

Dancers from the McLoughlin school in Glasgow, Scotland put on make-up as they get ready to participate in the 2022 World Irish Dancing Championships on its 50th anniversary, in Belfast, Northern Ireland on April 14, 2022. (Photo by Clodagh Kilcoyne/Reuters)

Mexican training ship “Cuauhtemoc” moves past the Galata Tower in Istanbul, Turkiye on July 18, 2023. “Cuauhtemoc”, which was sent by the Mexican government as a sign of friendship between the two countries on the occasion of the 100th anniversary of the founding of the Republic of Turkiye, arrived at Sarayburnu Port. (Photo by Omer Faruk Yildiz/Anadolu Agency via Getty Images)