Chak Mool is a cavern dive site near Tulum, Mexico, offering an overhead environment with depths ranging from 8 to 12 metres. Divers access the site from the shore, encountering mild currents and visibility that varies between 5 and 25 metres. The site features a distinct halocline, which is a key characteristic of this cavern system. Facilities available at the location include parking, toilets, showers, changing rooms, and a cafe. While specific marine life sightings are not confirmed at this exact site, species recorded around this area include green sea turtles, French angelfish, wrasses, and various stingray species.

Cenote Yax-Chen is a freshwater cavern and cave system near Tulum, Mexico, offering a shallow dive experience between 5 and 8 metres. The site is accessible to beginners, as the overhead environment remains within natural light reach of the cavern entrance. Divers should manage buoyancy to account for thermoclines, which can create layered hazing effects, particularly after rain when tannic acid influences the surface water. Visibility typically ranges from 5 to 20 metres. Facilities on-site include parking, toilets, showers, and equipment rental. Species recorded around this area include various reef fish, invertebrates, and occasionally crocodiles, which require a respectful distance.

Ballena is a reef site located 1500 metres offshore from Tulum, Mexico. This drift dive features natural channels and sandy bottom topography, making it suitable for beginners. Divers typically reach depths between 5 and 12 metres, with an average of 9 metres. The site experiences mild currents and visibility ranging from 15 to 30 metres. Access is by boat only, and the site is available for night diving. Species recorded around this area include Green Sea Turtles, French Angelfish, Great Barracuda, and various stingrays. Divers should be aware of boat traffic and sharp coral formations when navigating the reef.

Tulum Reef is a section of the Mesoamerican Barrier Reef situated 300 metres offshore, directly in front of the Tulum Archaeological Site. The reef offers views of the ancient Mayan ruins from the water. Depths range from 2 to 30 metres, with an average of 15 metres. Access is by boat, and the site is suitable for intermediate divers. Conditions include moderate currents and visibility between 10 and 30 metres. Hazards include boat traffic, surf, sharp coral, and deep sections. Species recorded around this area include green sea turtles, French angelfish, great barracuda, Indian lionfish, various stingrays, wrasses, blue tang, and Atlantic tarpon.

Yucatán Peninsula Reef in Tulum offers a accessible reef environment for beginner divers. Located 500 metres from shore, the site features depths ranging from 6 to 20 metres with an average of 12 metres. Visibility typically spans 15 to 30 metres, supported by mild currents and warm water temperatures between 27 and 30C. Divers can access the site via shore or boat, though caution is required at the entry point due to surf and shore break. Species recorded around this area include green sea turtles, French angelfish, great barracuda, and various stingrays. Facilities at the site include parking, toilets, showers, a cafe, and an on-site dive shop.

Tanka Tunum is a marine dive site located in Tulum, Mexico. This site is suitable for beginners, offering a consistent depth of approximately 6 metres. Divers access the site directly from the shore. Conditions are generally mild, with water temperatures ranging from 27C to 30C throughout the year. The site provides a straightforward environment for those looking to experience the coastal waters of the Yucatán Peninsula.

Underworld Tulum offers access to flooded cave and cavern systems featuring layered limestone passages and halocline zones. Divers experience depths ranging from 5 to 40 metres with an average of 15 metres. The site is accessed from the shore and presents mild currents with visibility varying between 15 and 100 metres. Water temperatures remain stable between 27 and 29C throughout the year. Due to the overhead environment, divers must maintain strict buoyancy control to avoid contact with sharp rock formations and manage equipment to prevent entanglement. The site provides facilities including parking, showers, changing rooms, rinse stations, air fills, and equipment rental.

Cenote Calavera is a freshwater cavern site in Tulum featuring three distinct rock openings that allow shafts of light to illuminate the main chamber. Divers enter via a shore jump through one of the circular openings. The site reaches depths between 5 and 19 metres, with visibility ranging from 30 to 52 metres. The water is still with temperatures between 27 and 30 degrees Celsius. Divers should maintain awareness of the overhead environment and be prepared for visual distortion caused by the halocline where fresh and salt water layers mix. Facilities include parking, toilets, showers, and changing rooms.