The reserve contains specific 'petenes,' which are tree islands growing around freshwater springs, often reaching up to 30 meters in height.
The American flamingo population in Celestún is one of the most significant in North America, with numbers often reaching into the thousands.
The water in the estuary is a mixture of fresh water from the aquifer and salt water from the Gulf, creating an ideal habitat for migratory birds.
The park acts as a biological corridor for various species, including the endangered spider monkey and the ocelot, which inhabit the denser forest patches.
The water's distinct coloration in certain areas is caused by tannins leaching from the mangrove roots.
Parque Natural Petenes-Ría Celestún is a protected biosphere reserve encompassing a unique transition zone between freshwater springs and the saltwater estuary of the Gulf of Mexico. The ecosystem is defined by vast mangrove forests that serve as a critical nesting and feeding ground for American flamingos. Visitors navigate the shallow, brackish waterways via local boat tours to observe the nesting colonies and diverse bird species. The reserve is specifically noted for its petenes, which are circular island-like formations of vegetation that grow around freshwater springs in the middle of the salt marsh. Beyond flamingos, the area supports populations of pelicans, herons, and the rare roseate spoonbill. The brackish water conditions are sustained by subterranean rivers discharging into the Celestún estuary.
From the boat at the edge of the flamingo feeding grounds, specifically using a telephoto lens to capture the birds against the reflection of the water.
Bring high-quality binoculars as boat operators must maintain a strict distance from flamingo flocks to avoid disturbing them.
Apply biodegradable insect repellent before arriving, as the mangrove environment attracts significant mosquito activity.
Bring a hat and sunglasses, as the reflection of the sun on the shallow estuary water creates intense glare.
Avoid midday tours during the summer, as the heat is extreme and bird activity is lower in the midday sun.
Flamingo sightings are seasonal and most reliable during the winter months; during the peak of summer, flamingo populations migrate to other parts of the peninsula.
Maintain silence while near bird colonies; do not feed wildlife; strictly follow the 'no-touch' policy regarding mangroves.
