Black Hole is a deep cave, cavern, and drop-off system located off the coast of Naples. The site features a significant depth range from 20 to 68 metres, requiring advanced technical skills and mandatory cave certification. Divers navigate an overhead environment where visibility fluctuates between 10 and 50 metres. The site is accessible only by boat, situated over 43 kilometres from shore. Due to the depth and potential for temperatures as low as 18C, drysuits or thick wetsuits are recommended. The habitat supports various reef fish and invertebrates. Divers must maintain strict depth management and remain alert for shark activity throughout the dive.

Red Zone is an artificial reef located within the northern section of the site known as the Swamp, part of Collier County's fourth artificial reef deployment. Established in 2003, the site consists of several large piles of miscellaneous concrete debris. Divers can expect depths ranging from 10 to 13 metres, with an average depth of 13 metres. Access to this site requires a boat, as it is situated 16 kilometres from the shore. Conditions at the site are variable, with visibility ranging between 4 and 15 metres and fluctuating currents. Due to the presence of boat traffic, divers should exercise caution during their ascent and descent.

Third Reef is an artificial reef located approximately 18.5 kilometres offshore from Marco Island. Part of the Collier County Artificial Reef Program, this site consists of concrete blocks and culverts deployed between 2001 and 2007. These structures provide significant vertical relief for divers to explore. The site sits at an average depth of 13 metres, with a range of 12 to 14 metres. Access is by boat only. Divers should expect moderate currents and visibility typically ranging from 10 to 20 metres. Water temperatures fluctuate between 21C and 30C throughout the year. Hazards include sharp coral and stonefish. A dive light is recommended for inspecting the interior of the structures.

Buddy's Break is a natural limestone ledge reef located off the coast of the United States. The site features a low-relief structure with approximately 3 feet of vertical profile. Divers can explore depths reaching 12 metres. Access to this site is strictly by boat. Conditions include moderate currents, and divers should be aware of the presence of sharks, stonefish, and strong currents. Due to the current conditions and site profile, this location is best suited for intermediate divers. The reef environment supports a variety of tropical fish and marine life that congregate around the limestone ledges.

The Bubba is a sunken shrimp boat located 9656 metres off the coast of the United States. Sunk in 2010 following a fire, the vessel has deteriorated significantly, leaving an expansive debris field rather than a recognisable boat structure. Divers can explore the remaining outrigger, engine block, and shaft. This site is suitable for advanced divers due to the moderate currents and potential for entanglement hazards within the wreckage. The average depth is 7 metres, with a range of 5 to 10 metres. Access is by boat only, with typical dive times around 40 minutes and visibility ranging from 5 to 15 metres.

Rocky Road is an artificial reef composed of approximately 200 limestone boulders, each averaging three feet in diameter. Located in the United States, this site was privately constructed and remains independent of local artificial reef programmes. Divers can expect depths ranging from 3 to 10 metres, with an average depth of 7 metres. Access to the site is by boat only. Visibility varies between 5 and 25 metres, and currents are generally mild. Due to the lack of published coordinates, the site experiences minimal fishing traffic. Divers should remain aware of boat traffic in the area.

Bubbies' Bagpipes is an artificial reef located in the United States, featuring a limestone bottom defined by numerous crags and crevices. The site is distinguished by 25 cement-filled structures containing multiple pipes, which serve as the primary artificial habitat. Divers can expect depths ranging from 8 to 15 metres, with an average depth of 12 metres. Access to this site is by boat only. Conditions include moderate currents and visibility typically between 5 and 15 metres. Water temperatures fluctuate between 20C and 31C throughout the year. Due to the nature of the site, divers should remain aware of boat traffic in the area.

Second Reef is an artificial reef site located 6 miles off Marco Island as part of the Collier County Artificial Reef Program. The site consists of large debris fields featuring concrete culverts and sunken barges. Divers can expect depths ranging from 9 to 11 metres, with an average depth of 10 metres. Access to this site is by boat only, located approximately 9656 metres from the shore. Conditions at the site are variable, with visibility typically between 4 and 15 metres and mild currents. The site is suitable for beginner divers, with typical dive times around 50 minutes. Divers should be aware of sharp coral present at the site.