Columbia Shallows is a shallow section of the extensive Columbia Reef, offering a high-quality snorkeling experience. The site features large coral heads and Caribbean barrel sponges in depths ranging from 5 to 15 metres, with an average depth of 8 metres. Snorkellers can observe common species such as whiptail stingrays and schoolmaster snapper, alongside less frequent sightings of French and queen angelfish, rock beauty, groupers, boxfish, and Caribbean spiny lobsters. Access is by boat only. Conditions are generally mild, though the area occasionally experiences temperature fluctuations due to chilly fresh water inflow from the nearby lagoon. Visibility typically ranges between 3 and 12 metres.

El Cielo is a shallow sandbar located 800 metres from shore, accessible only by boat. This site features a sandy bottom and seagrass beds at an average depth of two metres. It is well-suited for beginners, offering mild currents and warm water temperatures ranging from 27C to 30C. Snorkellers frequently encounter Cushion Sea Stars, Great Barracuda, and Whiptail Stingrays. Other species recorded here include Nurse Sharks, French and Queen Angelfish, Caribbean Spiny Lobster, and various wrasses. Be aware that jellyfish may be present in the water. The site is highly rated for snorkelling, with typical sessions lasting around 30 minutes.

La Francesa is a drift reef dive located off Puerto Aventuras, Mexico. The site features a reef structure with depths ranging from 12 to 30 metres, averaging 15 metres. Divers experience moderate currents, requiring good buoyancy control and drift diving awareness. Visibility typically spans 15 to 30 metres. Water temperatures remain warm throughout the year, between 27 and 29 degrees Celsius. Boat access is required for this site, and divers should be prepared for surge and swell conditions during entry and exit. The dive is suited for intermediate divers, with typical dive times around 50 minutes. Night diving is also available at this location.

Columbia Deep is a complex marine site located off the coast of Puerto Aventuras, featuring a diverse topography of reefs, walls, pinnacles, and caves. This advanced dive site requires boat access and is situated 10,000 metres from the shore. Divers encounter depths ranging from 8 to 100 metres, with an average depth of 22 metres. Conditions include moderate currents and visibility between 10 and 60 metres. Water temperatures remain consistent, typically between 27 and 29 degrees Celsius, though thermoclines may occur in summer. Due to the significant depth and potential for overhead environments, this site is strictly for advanced divers who must manage risks including decompression and nitrogen narcosis.

Palancar Bricks is a diverse marine site featuring a reef, wall, drift, cave, and canyon topography. Located near Cozumel Island, this site requires boat access and is suited for intermediate divers due to moderate currents and depths ranging from 5 to 37 metres, with an average of 23 metres. Divers may encounter nurse sharks, whiptail stingrays, and cushion sea stars. Other species recorded include French and queen angelfish, rock beauty, great barracuda, Indian lionfish, Caribbean spiny lobster, and various reef fish. Visibility typically ranges between 10 and 30 metres. Hazards include boat traffic, deep sections, sharp coral, and strong currents. Night diving is permitted at this location.

Columbia Ladrillos is a marine dive site located 2000 metres off the coast of Puerto Aventuras, Mexico. This site features a combination of reef, wall, and canyon topography. Divers can expect depths ranging from 9 to 30 metres, with an average depth of 18 metres. Access to the site is by boat only. Conditions include moderate currents and visibility typically between 15 and 30 metres. Water temperatures remain consistent, ranging from 27C to 29C throughout the year. The site is suitable for intermediate divers and supports night diving. Hazards include the depth, sharp coral, and the potential for strong currents.

Palancar Horseshoe is a reef and wall site located near Puerto Aventuras, Mexico. This drift dive features a depth range of 9 to 30 metres, with an average depth of 20 metres. Divers should expect moderate currents and visibility ranging from 20 to 35 metres. The site is suitable for intermediate divers and requires boat access. Hazards include boat traffic, potential for decompression, nitrogen narcosis, and sharp coral. Water temperatures remain warm throughout the year, typically between 27 and 30 degrees Celsius. Night diving is permitted at this location.

Palancar is a reef and wall system located 2000 metres offshore from Puerto Aventuras. This site features three miles of continuous reef, including distinct sections known as Palancar Caves and Bricks. Divers can explore depths ranging from 6 to 40 metres, with an average depth of 15 metres. Access is by boat only, and the site is suitable for intermediate divers due to moderate currents. Visibility varies significantly, ranging from 8 to 60 metres. Water temperatures remain warm throughout the year, between 27 and 29 degrees Celsius. Night diving is permitted at this location, with typical dive times lasting 60 minutes.