Without a doubt, the best and most well-known attractions of Cozumel are its spectacular reefs, numerous and varied in their formation, location, acces and dificulty. They form an important part of a long coral barrier (2nd largest in the world) known as the Great Mayan Barrier that extends from contoy Island in the north (located on the eastern coast of the Yucatán Península) to the Gulf of Honduras in Central America.
For their dazzling variety and beauty, the reefs of Cozumel deserve their reputation as among the best in the world. Also contributing to their popularity is their easy acces and availability year-round. The water remains clear all four seasons and water temperature fluctuates from 25°C to 28°C (77°F - 82°F) with an averange air temperature of 24°C (76°F).