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.

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.

Gran Cenote in Tulum is a freshwater cavern and cave system set within a jungle environment. Divers and snorkellers access the water from the shore to explore geological formations featuring moss and aquatic plants. The site offers depths ranging from 9 to 14 metres with visibility between 10 and 50 metres. Conditions are generally mild, though the environment includes overhead structures. Water temperatures typically range from 27 to 30 degrees Celsius, though some areas may feel cooler. Facilities available on-site include parking, toilets, showers, changing rooms, and a cafe. The site is suitable for beginners and provides a distinct freshwater experience compared to regional ocean diving.

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.

Cenote Carwash, also known as Aktun Ha, is an open-air cenote near Tulum that features a unique underwater garden aesthetic. The site is characterised by lily pads and submerged fallen trees, creating an appearance often described as an underwater forest. Divers and snorkellers can explore depths ranging from 5 to 15 metres, with an average depth of 10 metres. Visibility typically spans 30 to 50 metres. The site is accessible via a shore entry and offers facilities including parking, toilets, showers, and changing rooms. Due to the overhead environment, divers should be aware of potential hazards such as low visibility and the presence of crocodiles.