On the Costera, the lakefront road, running the whole range of ways to get onto the Laguna de los Siete Colores: a sailboat with a crew, a pontoon for a group, or a paddleboard or kayak you take out yourself.
The sailing trip is the one worth the money. The lagoon changes colour with depth over a white limestone floor, so a boat that moves slowly and quietly across it is a better instrument than an engine. The usual circuit takes in the Cenote Negro, the Canal de los Piratas and the stromatolites — living microbial reefs, among the oldest life forms on earth, which is why you are asked not to stand on them.
A second number, +52 983 732 9380, reaches the same office.