Scuba diving and snorkeling. around Isla Mujeres is unforgettable. The Manchones Reef begins just off of Isla's shore and the Cuevones and Banderas Reefs are close by. The waters are calm and clear - perfect for the beginner as well as the advanced diver. With 50 accessible sites, Isla Mujeres is a great option and a little unknown with all the hype that Cozumel (its large neighboring island) gets. Those staying in Playa Norte may enjoying snorkeling in the lagoon next to the Avalon Hotel which has a respectable number of fish in an easily-accessible location.