Know Before You Go
Walk along the length of the lagoon to reach several public access points with great waterfront views. Here, you can negotiate with a boat captain for a ride to one of the cenotes or out to the "Pirate's Canal." Keep an eye out for wading birds like the stunning roseate spoonbill.
A few bucks will buy your admission to one of the "balnearios" (public clubs) for a swim or kayak paddle -- or a drink. Visit the "Fuerte de San Felipe" for an elevated view of the lagoon and a brief, pirate-centric history lesson.
Due to the slow flow of water into and out of the lagoon as well as the delicate stromatolites, it is strongly recommended to only wear biodegradable suncream and other skin products when going in the water. Kayaking and paddleboarding the lagoon is also preferable to boarding motorboats.