Teardrop-shaped Cozumel is a calm, charming island with a primo diving reputation. Otherwise known as Ah-Cuzamil-Peten (Island of Swallows), It's Mexico's most populous island.

Thanks to a Jacques Cousteau documentary on Cozumel's world-class reefs, it has been a favorite international diving destination since 1961. It's literally swimming with dive sites - 100 have been identified within 5km (3mi) of the island; at least a dozen of them are shallow enough for snorkeling.

  
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