Pronatura is a Mexican non profit organization that has worked for more than a decade in priority areas of the Yucatan Peninsula; particularly, in the Biosphere Reserves of Ria Celestun, Ria Lagartos and Calakmul, as well as in the Flora and Fauna Protection Areas of Yum Balam and Otoch Ma'ax Yetel Kooh. Recently, PPY began an ecorregional strategy and is implementing projects in the Biosphere Reserve of Los Petenes, in the State Reserve El Palmar and in the forest mass of the municipality of Calakmul.