The International Photographic Competition “H₂Or the nature of water” is conceived, organized and promoted by the Reserves of the Po Delta, Po Grande and the Tuscan-Emilian Apennines. The MAB Program is a recognition launched by UNESCO with the aim of improving the relationship between man and the environment and reducing the loss of biological and cultural biodiversity. This year, water is the subject of the photography competition with the aim of spreading knowledge of the value of water and the mission of the Biosphere Reserves around the world.