Crocker Reef is a marine site located near Hen and Chickens Reef in the United States. This reef and wall site is accessible only by boat, situated approximately 8850 metres from the shore. Divers can expect depths ranging from 9 to 34 metres, with an average depth of 9 metres. Conditions are characterised by mild currents and visibility between 10 and 30 metres. Water temperatures fluctuate throughout the year, ranging from 23C in January and February to 29C in August. Due to the depth and potential for strong currents and boat traffic, divers should exercise caution. The site is suitable for those comfortable with boat-based diving in an open marine environment.

Hen and Chickens Reef is a marine site located 4828 metres from shore near Islamorada. The reef is characterised by a large central coral head surrounded by smaller coral formations. This site is suitable for beginners and accessible only by boat. Divers and snorkellers can expect depths ranging from 12 to 22 metres, though the reef structure itself includes shallower sections between 1.5 and 6 metres. Conditions generally feature mild currents and visibility between 10 and 30 metres. Water temperatures fluctuate between 24C and 30C throughout the year. Hazards at this location include boat traffic, jellyfish, low visibility, and sharp coral.

Barrier Reef Shallow at Davis Reef features a classic spur and groove coral formation. The topography consists of coral spurs separated by sandy grooves that extend toward deeper ledges. Located 6437 metres offshore, this site requires boat access and is suitable for beginners. Depths typically range from 9 to 14 metres, with an average of 11 metres. Visibility varies significantly, ranging from 9 to 30 metres, and currents are generally mild. Divers should remain aware of boat traffic, jellyfish, and sharp coral structures. A typical dive at this location lasts approximately 45 minutes.

Captain Grumpy is a boat-access reef located 3200 metres from shore at Hen and Chickens Reef. The site features a consistent depth of 25 metres and is suitable for beginners, though it requires boat transport. Divers experience mild currents and visibility ranging from 5 to 10 metres. The reef structure is composed of sharp coral, necessitating protective gloves and footwear. Night diving is permitted, offering opportunities to observe nocturnal activity. Due to the presence of sharks in the area, divers should maintain constant awareness of their surroundings. Typical dives last 60 minutes, and the site remains open throughout the year.

Davis Reef is a marine site located 7242 metres from shore near Islamorada. The reef structure ranges from 5 to 18 metres in depth, with an average of 7 metres, making it suitable for intermediate divers. Access is by boat only, and the site supports night diving. Visibility typically fluctuates between 10 and 30 metres, with mild currents present. Divers should be aware of boat traffic, jellyfish, and sharp coral. Species recorded around this area include barracuda, nurse sharks, angelfish, moray eels, and various wrasses. Please note that recent high water temperatures have caused widespread coral bleaching and mortality in the Florida Keys, which may impact current reef health.

Victory Reef is a distinctive site featuring spur and groove formations and a natural V-shaped topography. Located 8046 metres from shore, this reef and wall site offers depths ranging from 12 to 30 metres, with an average depth of 21 metres. Divers typically experience mild currents and visibility between 9 and 30 metres. The site is suitable for beginners and requires boat access. Species recorded around this area include green sea turtles, nurse sharks, great barracuda, and various angelfish. Divers should be aware of the presence of lionfish in the area. A typical dive at this location lasts approximately 50 minutes.

Hen and Chickens Reef consists of isolated patch reefs located approximately 3218 metres offshore from Islamorada. These reef structures, which vary in shape from round to oval, rise from the seabed and are surrounded by sand. The site is suitable for beginners and is often used for introductory scuba training. Divers can expect depths ranging from 6 to 9 metres, with an average depth of 7 metres. Access is by boat only. Conditions include mild currents and visibility typically between 5 and 15 metres. Water temperatures fluctuate between 24C and 30C throughout the year. Hazards include jellyfish, sharp coral, and surge.

Hamm is a shallow reef site located at Hen and Chickens Reef, Islamorada. With depths ranging from 7 to 10 metres, it is well-suited for beginner divers. Access is by boat only, and the site features mild currents and visibility between 5 and 12 metres. Divers should maintain neutral buoyancy to avoid contact with sharp coral and rocks present throughout the reef. The site supports night diving, which provides opportunities to observe lobsters and crabs that emerge after dark. Species recorded around this area include nurse sharks, green sea turtles, various angelfish, wrasses, and blue tangs. Ensure all air fills and equipment are prepared before departure as no facilities are confirmed on-site.