Within the Mayan Riviera you will find an extraordinary ecological reserve with beautiful jungle landscape and ivory-sand beaches, where you can find numerous spots to camp by the Caribbean Sea.

* Reserva de la Biosfera de Sian Ka'an. Within this nature reserve lies Boca Paila, an open area that provides camping grounds.

Due to spectacular coral formations, which stem from the Great Meso-American Barrier Reef, the Mayan Riviera has countless spots perfect for scuba diving, snorkeling, and cave diving. In this region, you can also explore a unique system of extraordinary underground rivers and sinkholes inhabited by a wide variety of marine species.

* Parque Ecologico de Xpu-Há. Located 93 km (57 mi) south of Cancun and 25 km (15 mi) south of Playa del Carmen off Highway 307. Among its various attractions, this heavenly ecological park has an underground network of 61 sinkholes. The most impressive is the Manati sinkhole, which has an excellent diving spot north of the bay. Within the park there is a section of tropical mangroves rich with local flora and fauna. Finally, near the coral reef, you can go diving in a lagoon that is 200-meters (650-feet) wide and 2-meters (6-feet) deep.

* Reserva de la Biosfera de Sian Ka'an. At this biosphere reserve, you can scuba dive along a protected 47-km (29-mi) strip off the coast, as this area forms part of the second largest barrier reef in the world. It is home to hundreds of species of multicolored fish, sponges, pink snails, sea urchins, starfish, lobsters and many other species.

* Xel-Há. Located 47 km (29 mi) south of Playa del Carmen off the Cancun-Tulum Highway 307. This ecological park has creeks, natural wells, lagoons and caves with underground rivers that empty into the sea. Open daily from 8:30 to 6:00. Tel. (984) 875 6000 www.xel-ha.com. Here you can scuba dive and snorkel in the main lagoon or an underground river. In addition, you can take an amazing tour to observe underwater life in caves and rivers with crystalline waters.

* ParqueEcologicoTres Rios. Located 11 km (7 mi) south of Playa del Carmen off the Cancun-Tulum Highway 307. This ecological park is nestled in a subtropical jungle, giving you close contact with nature and an unforgettable experience. Here you can scuba dive alone or with the help of an expert guide in eight different sinkholes. In addition, you can take diving lessons with instructors who will teach you how to fully enjoy the experience.

* Xcaret. Located 8 km (5 mi) south of Playa del Carmen off the Cancun-Tulum Highway 307. This ecological park offers attractions you won’t find elsewhere, such as the archaeological ruins of one of the most important ceremonial centers of the Mayan culture. Its natural beauty is one of a kind and benefits from ponds, caves, underground rivers full of colorful fish, and a reef aquarium. Open daily from 8:30 to 10:00. Tel. (998) 883-0470 www.xcaret.comThis is an excellent place to snorkel and scuba dive due to its extensive 600 meters (2,000 feet) of caves and tunnels.

* Playa del Carmen. Located 68 km (42 mi.) south of Cancun off Highway 307. It is one of the most attractive destinations in the Mayan Riviera thanks to its extraordinary tourist resorts, cultural centers and natural areas. Off this shore you can dive among the vast coral structures of the Great Mayan Reef. You can also explore underground systems that lead to the following sinkholes: ChacMool, La Ponderosa, Dos Ojos, Nohoch-Na-Chich, GranCenote, Car Wash, Chikin Ha, TajMajal and Angelita.

* Parque Natural Aktun Chen. Located at Km 107 off the Cancun-Tulum Highway between Akumal and Xel-Há. In this park you’ll find one of Quintana Roo’s main cave systems. Open daily from 9:00 to 5:00. Here you will discover, among other wonders, a 12-meter (39-foot) deep sinkhole with crystalline waters, as well as thousands of stalactites, stalagmites and fascinating rock formations.