Isla Mujeres is a Mexican island in the Caribbean Sea, 13 kilometers off the coast from Cancún. It's known for beaches such as northern Playa Norte and for snorkeling and scuba diving on the surrounding coral reefs. At Punta Sur, the southern tip, there's a lighthouse, the remains of a Mayan temple and a sanctuary for sea turtles.
Xenotes are beautiful and naturally occurring underground swimming holes. There are many cenotes in the Yucatan peninsula of Mexico because of the geology of the region. The rocks are limestone and have eroded over a very long time.