Perhaps these boats anchored along the shoreline will inspire you to sign up for a scuba diving or snorkeling adventure. Offshore is the Mesoamerican Barrier Reef, an amazing underwater world stretching for 600 miles. The wall diving near Cozumel is incredible. You can arrange a ride with one of these boats. Or a local dive shop can supply the equipment you need plus lessons from certified instructors. Also consider experiencing the submerged caves of a cenote. Unforgettable!