Yucatec Divers
- Playa del Carmen. Reef and cave diving, as well as training. [English/German/French]
- http://www.yucatek-divers.com/

Tank Ha Dive Center
- Offers information on local diving and instruction plus snorkeling and beach activities
- http://www.tankha.com

Sealife Divers
- Dive shop with cavern dives, open water ocean diving, PADI instruction and certification, and snorkeling trips.
- http://www.sealifedivers.com/

Scuba Libre
- Reef and cenote diving, with certification classes. They describe destinations and course content.
- http://www.scubalibre.com.mx

Pluto Dive
- Cave and ocean dive trips, as well as equipment rental. The provide photos and safety instructions for each destination. [English/Spanish/Italian]
- http://www.plutodive.com/

Phantom Divers
- Offers ocean and cave diving, as well as scuba certification classes and snorkeling. They describe their packages and their staff.
- http://phantomdivers.com

Fantasea Dive
- Reef and cave diving day trips, with beginner and advanced classes. Rates, photos, and details of training.
- http://www.fantaseadive.com

Dive Shop Mexico
- Offers ocean and cavern diving, PADI courses and snorkeling trips.
- http://www.diveshopmexico.com/

Cyan Ha Dive Center
- Offers small group ocean and cenote diving, and teaches PADI certification courses.
- http://www.cyanha.com

Abyss Dive Center
- Offering recreational reef and cenote diving, and training up to SSI/PADI Divemaster level.
- http://www.abyssdiveshop.com