Choose between three departure times when you book, then meet your guide in the lobby of your Cancun hotel to begin this half-day of adventure. Board a comfortable, air-conditioned van and drive to the marina for your check-in and briefing. Get outfitted with a complete set of snorkeling gear (mask, snorkel, life vest, fins and optional weights), and learn how to wear it properly with help from the staff. Beginners can participate in an optional snorkeling lesson in the shallow waters close to shore before boarding the boat and setting out to sea. Group size is limited to 10 for a personal experience. After just five minutes on the boat, arrive at the first location: a well-conserved coral reef full of fish and marine life. With calm, warm water that's only 8-12 feet (2.5-3.5 meters) deep, this snorkeling spot is great for all levels.