Cozumel, Mexico | What would you do with 8 hours in Cozumel? Experience a fine combination of sandy beaches and rolling surf in Cozumel, Mexico. Below the surface, divers can explore the largest barrier reef in the Western hemisphere. Home to more than 250 species of topical fish, there’s just as much to explore below the water than there is above. Cruise with Royal Caribbean to Cozumel and explore above and below the ocean.