The Haystacks is a reef and artificial reef site located at Sambo Reefs, United States. Divers access this site via boat, with the location situated approximately 11 kilometres from the shore. The site features a depth range of 1 to 18 metres, with an average depth of 8 metres. Conditions are generally mild, though visibility can fluctuate between 10 and 30 metres. Typical dives last around 50 minutes. Due to the nature of the environment, divers should be aware of potential hazards including boat traffic, surf, and sharp coral. This site is suitable for beginners.

The USS Vandenberg is a large artificial reef wreck located near the Sambo Reefs. This site is intended for advanced divers due to its depth, which ranges from 12 to 50 metres with an average of 30 metres. Access is strictly by boat, as the site lies over 11 kilometres from shore. Divers encounter moderate currents and visibility typically between 10 and 30 metres. The wreck presents hazards including deep water, potential for entanglement, and overhead environments. The surrounding habitat supports a variety of marine life typical of the region, including reef fish and invertebrates. Facilities for air fills, equipment rental, and guided tours are available through local operators.

Marker 32 is a reef site located within the Sambo Reefs near Key West. This site is suitable for beginners and offers depths ranging from 3 to 8 metres, with an average depth of 6 metres. Access is by boat only, as the site is situated approximately 9656 metres from the shore. Divers and snorkellers can expect mild currents and visibility that varies between 5 and 25 metres. Water temperatures remain warm throughout the year, ranging from 25C to 29C. Night diving is permitted at this location. Due to the nature of the area, boat traffic is a hazard to be aware of during activities.

Looe Key Reef is a prominent reef site located in the Lower Keys, named after the HMS Looe. The site features significant coral cover and is part of the Mission: Iconic Reefs initiative. Divers and snorkellers can explore depths ranging from 2 to 10 metres, with an average depth of 6 metres. Access to the site is by boat only, as it is situated approximately 9656 metres from the shore. Conditions vary, with visibility ranging from 6 to 30 metres and moderate currents. The site is suitable for beginners and supports night diving, with typical dive times around 60 minutes. Hazards include sharks, sharp coral, and strong currents.

Looe Key is a reef system located at Sambo Reefs, United States, offering depths ranging from 3 to 30 metres with an average of 15 metres. Accessible only by boat, the site features mild currents and visibility between 6 and 30 metres. The reef structure consists of hard and soft corals. Divers should be aware of potential hazards including surge, swell, and strong currents. Water temperatures vary from 23C to 29C, though high temperatures in 2023 resulted in coral bleaching and mortality. The site is suitable for beginners and supports night diving, with guided tours and boat charters available locally.

Sambo Reefs offers a diverse underwater environment featuring both natural reef structures and artificial reef elements. Depths range from 3 to 32 metres, with an average of 15 metres, making it suitable for beginners. Divers can encounter common species such as Great Barracuda, Foureye Butterflyfish, and Scrawled Filefish. Very common sightings include Blue Tang, wrasses, and Stoplight Parrotfish, alongside Purple Sea Fans. The site is accessible only by boat, with mild currents and visibility typically between 10 and 30 metres. Water temperatures fluctuate between 24 and 29 degrees Celsius. Note that high temperatures in 2023 resulted in significant coral bleaching and mortality. Hazards include sharks, jellyfish, sea urchins, and sharp coral.

Looe Key is a diverse marine site featuring a combination of natural reef, wreck, and artificial reef structures. Located 9656 metres from shore, the site requires boat access and offers depths ranging from 2 to 33 metres, with an average of 7 metres. Visibility is variable, typically between 2 and 10 metres. Divers should be prepared for moderate currents and exercise caution regarding sharp coral, jellyfish, and sharks. While shallower areas accommodate beginners, the deeper sections require careful buoyancy control and experience. Guided charters are recommended to navigate the currents effectively. Water temperatures range from 23C to 29C, though recent summer conditions have resulted in coral bleaching and mortality.

The Adolphus Busch is an artificial reef wreck located near Sambo Reefs. This site is intended for advanced divers due to its significant depth, which ranges from 60 to 110 metres with an average of 80 metres. Access is strictly by boat, as the site is situated approximately 9656 metres from the shore. Divers should be prepared for moderate currents and visibility that fluctuates between 10 and 30 metres. Hazards at this location include the extreme depth, potential for entanglement, and variable visibility. Typical bottom times are around 50 minutes. Water temperatures range from 19C in the winter months to 26C in August.