Sian Ka’an is a biosphere reserve. It was established in 1986 and became a UNESCO World Heritage Site in 1987. Part of the reserve is on land and part is in the Caribbean Sea, including a section of coral reef.
Sian Ka’an is located in the municipality of Tulum. You can visit the reserve by booking a tour from Playa del Carmen or directly at Tulum town. Usually you leave Playa or Tulum in the morning, it takes around 2 hours to get there by 4×4, then you eat in a basic restaurant, and get on a boat to visit the reserve. Coming back they stopped at the same town so you can eat or buy typical stones, bracelets or collars.
HOW MUCH ?
The cost is around 120 us$ for the entire day, but there is cheaper offers (like if you go there by yourself, by car or by bike.)
Bacalar and his seven shades of blue lagoon is just a magic town, perfect to snorkeling, swim or dive. The meaning in Mayan of the name Bacalar is “surrounded by reeds”.
You can leave Playa del Carmen in the morning and come back at the end of the afternoon, or you can spend a night there to enjoy 2 full days there.
Bacalar is the perfect place for families or friends, as you have restaurants, kids playground, kayak renting, 1h30 boat trip to visit the lagoon and others magic places around, the San Felipe Fort and museum is just breathtaking ( 30min visit ), the Bacalar Rapids with his colors from green to turquoise, you should visit Bacalar before it get too touristy!
Bacalar is located 4 hours south of Playa del Carmen.
To get there you can go by car or take the bus ADO ( 7 to 15 us$ depending on the departure hour ).
HOW MUCH ?
The round-trip with ADO is between 15 and 30 us$ depending on the departure time.