케이브 다이빙, Mexico

Mexico's best-known cave diving is in the flooded limestone caves of Quintana Roo on the Yucatán Peninsula, entered through cenotes (natural sinkholes that open onto the water table). The Quintana Roo Speleological Survey's archive held 1,736.7 km of underwater cave passage in more than 412 caves when its site was last updated in January 2025, including Sistema Ox Bel Ha and Sistema Sac Actun, the two longest surveyed underwater caves on its list. The caves are anchialine: fresh water lies over denser salt water, and the boundary between them (the halocline) blurs visibility when it is disturbed.

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Cenotes sit on ejido (communal) or private land, and each owner sets its own entry rules, fees, opening days and camera policies. Guided cavern tours for divers without cave training run only at designated cenotes on fixed cavern lines with a local guide, under rules published by CREER, a regional committee of cave instructors and guides that states it is not a government body. Cave diving beyond the cavern zone requires cave certification; CREER also runs a voluntary registration for visiting cave divers. Commercial dive tourism in Mexico falls under the federal standard NOM-012-TUR-2016, which requires operators to be registered with the national tourism register and to use dive guides accredited by the tourism ministry.

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