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.

Escuela Puerto Aventuras is a shallow reef site located in Tulum, Mexico, suitable for beginner divers. The site features an average depth of 7 metres and is accessed directly from the shore. Divers can expect mild currents and visibility ranging between 20 and 30 metres. Typical dive times are approximately 40 minutes. Hazards at this location include boat traffic, jellyfish, and sharp coral. Species recorded around this area include green sea turtles, French angelfish, great barracuda, Indian lionfish, Brazilian reef octopus, chain moray, Chupare stingray, whiptail stingray, wrasses, purple sea fans, Atlantic tarpon, Caribbean ocean surgeonfish, foureye butterfly fish, and various drum and croaker species.

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.

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.

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.

Coquitos is a shallow reef and cave site located off the coast of Tulum. The site features a series of small caves suitable for exploration, with an average depth of 7 metres and a maximum depth of 12 metres. Conditions are generally mild, with visibility ranging from 10 to 30 metres. Access to the site is by boat only. It is well-suited for beginners, with typical dive times around 50 minutes. Species recorded around this area include green sea turtles, French angelfish, great barracuda, Indian lionfish, whiptail stingrays, and various wrasses. Divers should be aware of boat traffic and sea urchins in the area.