For a list of service providers please follow the relevant links:
Official Marine Park laws stipulate: Touching the sculptures is prohibited. A life vest must be worn when snorkelling. A local guide must be used when diving.
Nautical operators that have a partnership with MUSA
Aquaworld: http://www.aquaworld.com.mx
Dive and snorkelling from Cancun: http://www.nauticoscancun.org/museo.php
Dive and snorkelling from Isla Mujeres: http://musaislamujeres.com
The Map