Members of the Pontifical Swiss Guard stand by at St. Peter's Square before Pope Francis delivers his traditional Christmas Day Urbi et Orbi speech to the city and the world from the main balcony of St. Peter's Basilica at the Vatican, December 25, 2021. (Photo by Yara Nardi/Reuters)

Revelers take part in the Theatre Bizarre festival, a Halloween celebration that is returning in person for the first time since the COVID-19 pandemic, in Detroit, Michigan, U.S., October 14, 2022. (Photo by Dieu-Nalio Chery/Reuters)

A squirrel digs into a pumpkin in Washington, U.S., November 28, 2022. (Photo by Amanda Andrade-Rhoades./Reuters)

Grand title winner: Environmental photographer of the year. The Bitter Death Of Birds by Mehdi Mohebi Pour. This photo shows the efforts of the environmental forces to collect the bodies and prevent the spread of this disease. The Miankaleh wetland is being destroyed by changes in the climate and it is my duty as a photographer to highlight these problems and create a record for history. I want to prevent the complete destruction of the wetland and the potential environmental disaster by showing the issues and threats to these beautiful natural places. (Photo by Mehdi Mohebi Pour/Environmental Photographer of the Year)

White horses of the Camargue thunder through the shallow salt flats at sunset on December 8, 2022. Known as Horses of the Sea, the breed native to the wetlands in southern France is one of the oldest in the world. (Photo by Nathalie Mountain/Media Drum Images)

Panda keepers hold cubs while posing for photos ahead of the new year at the Chengdu Research Base of Giant Panda Breeding in Chengdu, China's southwestern Sichuan province on December 29, 2022. (Photo by AFP Photo/China Stringer Network)

A technician disinfects official balls before the Group F Africa Cup of Nations (CAN) 2021 football match between Mauritania and Gambia at Limbe Omnisport Stadium in Limbe on January 12, 2022. (Photo by Issouf Sanogo/AFP Photo)

A baby sloth uses his mother as a hammock while she feasts on papayas in Heredia province in Costa Rica in April 2023. (Photo by William Steele/Solent News)