In conclusion, if you're planning a trip to Cancun, be sure to include a visit to the Punta Nizuc reef and the MUSA underwater museum on your itinerary. With its stunning beauty and unique attractions, this underwater wonderland is an experience you won't want to miss.
Right in front of Playa del Carmen, the coral reef (second largest in the world) is laying roughly 150 - 200 meters offshore at a depth of 10-15 meters.
Cancun, Mexico is home to the Great Mayan Reef. The coastal waters of Cancun offer some of the best snorkeling anywhere on Earth. You can swim out right from your hotel beach to snorkel, but you are likely to see more of the seafloor than sea life.