Start the tour in the lobby of your hotel in Cancun. Board an air-conditioned van which will take you to the Marina. After a quick check-in and an activity briefing, hop onto a boat and set off to begin your 3-hour snorkeling adventure.  Make your first snorkeling stop at the sunken ship, the remains of the USS Harlequin, dating back to the Second World War. Acquired by the Mexican Marines, the vessel was used for marine studies before being eventually sunk in 2000 in an effort to create an artificial reef. Next, make your second stop at the magnificent coral reefs along the Great Mayan reef barrier. This incredible site is part of the 2nd largest coral barrier in the world. Enjoy the opportunity to interact with colorful fish and other marine life in their natural habitat. This is a tour for people that do not have a lot of time or do not want to take a full day tour for a couple of hours to snorkel, those who love the ocean and those that have been around many times and just want to focus on the snorkeling. Water and soft drinks are included throughout the whole excursion.