Aquanauts Dive Rite Tek Center Mexico
- Offering scuba diving, cenote and tek diving, PADI and NAUI instruction, with locations in Puerto Aventuras and Xpu-Ha.
- http://www.aquanauts-online.com/

Mayakoba Golf Classic
- Information on PGA tour event at El Camaleón golf course.
- http://www.shark.com/gnpc/mayakoba_golf_classic.php

Ocean Quest Dive Center
- Ocean and cave diving from Cozumel and Playa del Carmen. They list destinations and classes.
- http://www.playascuba.com

AquaWorld
- Snorkeling, scuba, jetski tours, and other water activities in Cancun and Cozumel, with transfers from other sites on the coast.
- http://www.aquaworld.com.mx/

Punta Pelicano Flyfishing Lodge
- Ascension Bay. Information on accommodations, guides, and packages.
- http://puntapelicano.com/

Xcaret Cancun
- Ecological park and Mayan-themed family entertainment center located near Playa del Carmen with tours and online reservations.
- http://www.xcaret.com/

Xel-Ha
- A water park near Tulum describes their dolphin swims, snorkeling, and other activities.
- http://www.xel-ha.com

Scuba Mex Dive Shop
- Dive shop located at Paamul, near Playa del Carmen, offering reef and cavern diving, dive instruction.
- http://www.scubamex.com