Get picked up from your accommodation in Riviera Maya or Tulum and head to Sian Ka’an, a rich and diverse nature reserve south of Tulum. Board a small boat to visit Boca Paila lagoon and spot the local wildlife. Head out a short distance on open water to snorkel, if weather permits, on the Mesoamerican Barrier reef and be delighted by the healthy corals and abundance of fish. If the weather does not permit you to snorkel, visit an open cenote instead. See tropical saltwater canals, mangrove islands, and flooded sinkholes.  Return to the beach where your homemade lunch awaits you. Relax amongst the coconut groves or go for a swim in the sea before going back on the road. Get dropped off at your accommodation and reflect on the unique landscapes you just encountered.