The Thunderbolt is a purpose-sunk vessel resting on a sandy bottom at depths between 23 and 36 metres. This advanced dive requires solid wreck certification and precise buoyancy control due to the overhead environment and potential for entanglement within the hull. Visibility typically ranges from 10 to 30 metres, often allowing divers to see the full silhouette of the wreck during descent. Moderate currents are common and can strengthen, so divers should plan their air consumption and exit carefully. Access is by boat only, and the site features sharp edges on the structure. Divers should be prepared for deep conditions and potential overhead hazards.

Coffins Patch is a cluster of shallow patch reefs located near Alligator Reef. The site features a distinctive shallow area known as The Stake, marked by an iron stake protruding from the water. Depths typically range from 5 to 10 metres, with an average depth of 4 metres. Access is by boat only, as the site is situated over 6 kilometres from shore. Conditions vary, with visibility ranging from 3 to 15 metres and mild currents. The site is suitable for beginners and offers a 4/5 rating for snorkelling. Please note that high water temperatures in 2023 caused widespread coral bleaching and mortality in the Florida Keys.

Horseshoe Reef is a shallow reef structure located at Alligator Reef, maintaining a consistent depth of 6 metres. This site is suitable for beginners, though the moderate current requires careful planning and coordination with your boat captain. Visibility typically ranges from 5 to 10 metres. Access is by boat only, and divers should remain vigilant regarding boat traffic by using a surface marker buoy. Water temperatures are warm throughout the year, ranging from 25 to 30 degrees Celsius. Divers should avoid contact with the reef structure to prevent injury from sharp coral and rocks, and remain observant of the surrounding area.

Coffins Patch is a shallow reef located near Alligator Reef, offering depths between 2 and 8 metres with an average of 3 metres. This site is suitable for beginners due to its mild currents and manageable navigation. Access is by boat only, with local charter services available. Visibility ranges from 10 to 30 metres, though it can be variable. Divers should maintain neutral buoyancy to avoid contact with sharp coral and rocks. Be aware of boat traffic when surfacing and deploy a safety marker buoy. Species recorded around this area include Great Barracuda, Nurse Shark, Green Moray, Queen Angelfish, Atlantic Tarpon, various wrasses, Hogfish, Gray Angelfish, Foureye Butterfly Fish, Caribbean Spiny Lobster, and parrotfish.

Hermans Behind is a reef site located in Islamorada, United States. The site features a depth range of 5 to 20 metres and is accessed by boat. Divers can expect mild currents and visibility reaching 30 metres. The moderate depth profile provides a comfortable environment for those building confidence in open water. Water temperatures fluctuate between 23C and 29C throughout the year. As conditions and facilities at this location can vary, divers should confirm charter arrangements and local site status in advance of their trip.

Samantha's is a shallow reef site in Islamorada, United States, with depths ranging from 5 to 8 metres. This site is suitable for beginner divers and offers a relaxed environment with mild currents. Visibility typically spans 5 to 10 metres, allowing for observation of the reef structure. Divers should maintain good buoyancy control to avoid contact with sharp coral and rocks on the seabed. Access is by boat only, and the site is suitable for night diving. Species recorded around this area include various angelfish, wrasses, parrotfish, and invertebrates such as purple sea fans.

Sombrero Beach offers a combination of natural and artificial reef structures, providing two distinct environments for divers. Located near Islamorada, the site features depths ranging from 3 to 10 metres with an average of 6 metres, making it suitable for beginners. Visibility typically spans 10 to 30 metres, supported by mild currents. Access is by boat, and the site is suitable for night diving. Divers should remain vigilant regarding boat traffic in the area and are advised to deploy a surface marker buoy before ascending. Full facilities, including a dive shop, showers, and changing rooms, are available nearby to support your dive.

Look Before You Leap is a reef site located at Alligator Reef near Islamorada. This site is suitable for beginners and offers depths ranging from 4 to 15 metres, with an average depth of 10 metres. Access is by boat only, as the site is situated 5000 metres from the shore. Divers can expect mild currents and visibility that varies between 5 and 25 metres. Water temperatures fluctuate throughout the year, ranging from 23C in January to 30C in July and August. Typical dives at this location last approximately 45 minutes. Divers should be aware of sharp coral present in the area.