Celestun Biosphere reserve is a 146,000 acre park located at the north-western tip of the Yucatan Peninsula. Celestun is a combination of coastal scrub, estuary, and mangrove, which together provides an excellent habitat for wildlife of many sorts.

Celestun is probably best known for its Flamingos, but is also host to over 300 other species of birds, including the endemic Yucatan Wren, Mexican Sheartail, and Black-throated Bobwhite. In addition to birds, Celestun houses many species of reptiles, including 2 crocodile species: Morelet's and American, 4 sea turtles: Hawksbill, Green, Loggerhead, and Leatherback, iguanas, land turtles, and Boa Constrictors.