The Horseshoe is a shallow reef site located within the Sambo Reefs, offering a manageable environment for newly certified divers. The reef structure sits at depths between 3 and 6 metres, with an average depth of 5 metres. Divers experience mild currents and visibility ranging from 3 to 10 metres. Access to this site is by boat only. When navigating the reef, maintain neutral buoyancy to avoid contact with the seabed and structures. Be aware of sharp rock and a submerged wreck present at the site. Water temperatures are warm throughout the year, fluctuating between 24 and 32 degrees Celsius.

Horseshoe Beach at Sambo Reefs is an artificial reef site offering shore access for snorkellers. The site features a former quarry environment with a rocky perimeter and a deeper central area. Depths typically range from 2 metres to an average of 5 metres, though the centre can reach depths of approximately 9 metres. Conditions vary, and snorkellers should be aware of sharp coral present throughout the area. This site is suitable for beginners looking for a shore-based experience without the need for a boat.

Calusa Beach is a shallow, protected cove located on the bayside of Bahia Honda State Park in Key West. This site features a mix of reef and seagrass habitats with an average depth of one metre, reaching up to two metres. Divers and snorkellers can explore the eastern end near the old bridge pilings. Marine life recorded here includes hermit crabs, which are common, alongside uncommon sightings of wrasses, gray angelfish, sea hares, bream, soft coral, various crabs, needlefish, and porkfish. The site is suitable for beginners, offering shore access with mild currents. Visibility typically ranges from one to five metres, and water temperatures fluctuate between 24C and 31C throughout the year.

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 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 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.

Sambo Reefs is a shallow marine reef site located near Key West, United States. The site is characterised by a very shallow depth of approximately two metres, making it suitable for beginners and snorkellers. Access to the reef is exclusively by boat. Conditions at the site are generally mild, with currents typically remaining light. Water temperatures fluctuate throughout the year, ranging from 23C in the winter months to 31C during the peak of summer. Given the shallow nature of the reef, dives are typically short, averaging around 30 minutes. The site provides a straightforward environment for those looking to explore shallow reef topography.