Take your cozumel shore excursion underwater in the cozumel submarine adventure youll dive to depths of 100 feet 30 meters in a submarine piloted by a professional and licensed crew discover why cozumel is one of the top dive destinations in the world on board the atlantis submarine your underwater shore excursion makes a journey beneath the surface to chankanaab an environmentally protected marine park home to amazing coral formations and a variety of marine animals