Explore the exotic underwater world of the Caribbean Sea without getting wet! The Ocean View Explorer–an air-conditioned semi-submersible vessel–cruises above the second largest barrier reef system in the world during your hour and 15-minute tour. Either ride atop the semi-sub and take photos of the Cozumel skyline, or step into the underwater viewing room to sit 4-feet below the water’s surface, spotting colorful tropical fish and incredible coral formations. This tour is provided by an operator that has been third-party certified to meet the Global Sustainable Tourism Council's Criteria for Tour Operators.