Kimono-clad young women take their selfies near a venue during the Coming of Age Day celebration ceremony in Yokohama, Japan on January 9, 2023. (Photo by Kim Kyung-Hoon/Reuters)

Belarus' Aryna Sabalenka poses with the 2023 Australian Open winner's trophy in Royal Botanic Garden in Melbourne on January 29, 2023, following her victory over Kazakhstan's Elena Rybakina in the women's singles final of the tennis tournament. (Photo by Carl Recine/Reuters)

Revellers are sprayed by a water cannon during a street party called “Bloco Das Barbas” in Rio de Janeiro, Brazil on February 18, 2023. Hundreds of street parties traditionally take place every year in the city before and during Rio de Janeiro's carnival. (Photo by Carl de Souza/AFP Photo)

A supporter of the Iranian women life freedom movement takes part in a demonstration, during the Munich Security Conference (MSC) in Munich, Germany on February 18, 2023. (Photo by Kai Pfaffenbach/Reuters)

This undated handout image courtesy of the San Diego Zoo Wildlife Alliance shows “Pat”, a Pacific pocket mouse fondly named after actor Sir Patrick Stewart. A mouse named after “Star Trek” actor Patrick Stewart is officially the world's oldest in captivity, a US zoo has announced Pat the Pacific Pocket Mouse – the smallest species of mouse in North America – bagged the title when he hit nine years and 209 days old on February 8, 2023. (Photo by Ken Bohn/San Diego Zoo Wildlife Alliance via AFP Photo)

Escorts of city prince Stefan I on their way to the key transfer for carnival in Maastricht, Netherlands on February 18, 2023. City prince Stefan I symbolically gains power over the city for three days. (Photo by Hollandse Hoogte/Rex Features/Shutterstock)

Well before Corey Arnold ever thought about photography, he fished. As a child, he dressed as a fisherman for four consecutive Halloweens, and once brought a dead 3-foot Mako shark to school for show-and-tell. He knew he wanted to be a professional fisherman, even if he didn’t understand what that actually meant.

Global wildlife populations will decline by 67% by 2020 unless urgent action is taken to reduce human impact on species and ecosystems, warns the biennial Living Planet Index report from WWF (World Wide Fund for Nature) and ZSL (Zoological Society of London). From elephants to eels, here are some of the wildlife populations most affected by human activity. Here: The maned wolf is among the large mammals in the Brazilian Cerrado that are threatened by the increasing conversion of grasslands into farmland for grazing and growing crops. (Photo by Ben Cranke/Nature Picture Library/Alamy Stock Photo)