RIO DE JANEIRO, BRAZIL - MAY 21 : A view of an alligator next to a river in Rio de Janeiro, Brazil on May 21, 2023. Alligators live in the midst of pollution and domestic waste in rivers at the west of the city. International Biodiversity Day, that is celebrated on May 22, was established by the United Nations (UN) in 1992. Its main objective is to make the world's population aware of how important it is to preserve biodiversity. Fabio Teixeira / Anadolu Agency/ABACAPRESS.COM