In this April 28, 2015 file photo, heads of tuna on a cart are carried by a fish dealer after the day's auction at Tsukiji Wholesale Market in Tokyo. In one of the biggest of Japan's many New Year holiday rituals, early on Tuesday, January 5, 2016, Tokyo's Tsukiji market will auction off with much fanfare a huge, glistening tuna, likely destined for one of the big sushi chains. If all goes as planned, it will be the last such auction at 80-year-old Tsukiji. (Photo by Shuji Kajiyama/AP Photo)

Winner, photojournalism. Elephant in the room, by Adam Oswell, Australia Zoo. Visitors watch a young elephant performing underwater. Oswell was disturbed by this scene, and organisations concerned with the welfare of captive elephants say performances like this encourage unnatural behaviour. In Thailand, there are now more elephants in captivity than in the wild. With the Covid pandemic causing tourism to collapse, elephant sanctuaries are becoming overwhelmed with animals that can no longer be looked after by their owners. (Photo by Adam Oswell/Wildlife Photographer of the Year 2021)

A rebel fighter carries his weapon as he moves through a hole in a wall in the old city of Aleppo near the frontline against forces loyal to Syria's President Bashar al-Assad December 28, 2014. (Photo by Jalal Al-Mamo/Reuters)

A panda bear sits on a logs in a zoo on January 15, 2015 in Hangzhou, China. (Photo by Feature China/Barcroft Media)

A female Indian rhinoceros called Maruska eats a vegetable birthday cake on her first birthday celebration at the Plzen Zoo on February 3, 2015 in Plzen, Czech Republic. (Photo by Ladislav Nemec/Isifa)

A dog from the K9 Division of the Sri Lanka Army’s Commando Regiment performs during an event to mark International Children’s Day at a school in Welisara, Colombo, Sri Lanka, 01 October 2016. Sri Lanka marks the Children's Day on 01 October with more emphasis on prevention of child abuse. (Photo by M.A. Pushpa Kumara/EPA)

A youth in make-up waits for the start of the annual Zombie walk in Mexico City, Saturday, October 22, 2016. Hundreds dressed in rags and ghoulish makeup to look bloody and decaying, gathered in the historic center of Mexico's capital. (Photo by Christian Palma/AP Photo)

Some two thousand runners dressed as Santa Claus make their way through Clapham Common during The London Santa Dash, to raise money for Great Ormond Street Hospital, in London, Britain December 4, 2016. (Photo by Dylan Martinez/Reuters)