Butler Barge is a 200-foot vessel intentionally sunk to function as an artificial reef. The wreck rests at a depth of 78 feet. Divers can access the site via both shore and boat entries. Due to the extreme water temperatures, which remain consistently around -2C throughout the year, this site requires specialised thermal protection and experience in cold-water diving environments. The structure of the barge provides a distinct underwater topography for exploration, though divers should be prepared for the challenging thermal conditions present at this location.

RMS Atlantis is a 38-metre supply vessel resting upright on a sandy seabed near Pensacola. Deployed as an artificial reef in 2023, the wreck sits at a maximum depth of 24 metres, with the upper sections reaching approximately 16 metres. This site is accessible only by boat, located 14.5 kilometres offshore. Divers should be prepared for moderate currents during their exploration of the vessel. Due to the depth and current conditions, this site is best suited for intermediate divers. Lionfish are present at this location, so divers should exercise caution regarding this invasive species.

The Phoenix Barge, also known as the Lost Barge, is an artificial reef and wreck site located in Spain. The vessel earned its nickname after a storm shifted its position, leaving it slightly damaged but intact. This site is suitable for intermediate divers, with depths reaching down to 23 metres. Access to the site is by boat only, as it is situated approximately 11 kilometres from the shore. Due to the depth and the presence of boat traffic, divers should exercise caution during their visit. There is no information available regarding the water temperature or marine life at this location.

Tug Boat Janet is an artificial reef located 24 kilometres offshore from Panama City Beach. This wreck sits at depths between 20 and 30 metres, requiring boat access and intermediate diving skills. Divers encounter mild currents and visibility ranging from 10 to 30 metres. A sharp thermocline is often present, causing significant temperature drops below the surface layer. Hazards include entanglement risks within the wreck structure, deep water, and the presence of lionfish. Species recorded around this area include drum, croaker, slippery dick, crabs, bream, hermit crabs, sea hares, bluebottles, snails, and mullet. Divers should monitor depth gauges closely and prepare for variable conditions.

Bay Cones is an artificial reef site in Portugal consisting of eight resin cones placed on the seabed. The site reaches a maximum depth of approximately 8 metres, with an average depth of 8 metres. Due to the location, access is by boat only. The site is suitable for beginner divers who can explore the individual characteristics of each cone. Conditions at this site vary, and water temperatures remain consistently low throughout the year.

June Jones Reef is a marine dive site in Portugal featuring the remains of a 50ft steel boat. The vessel has been significantly impacted by storms, resulting in a widely dispersed debris field across the seabed. Divers can explore these scattered mounds of wreckage, which contain various structural elements. Due to the nature of the site, careful navigation is required to locate the dispersed sections. Water temperatures at this location are consistently cold, recorded at approximately -2C throughout the year. This site is suited for divers comfortable with wreck exploration in challenging, low-temperature conditions.

The Janet is a steel tugboat wreck resting in an upright position on the seabed. Located in Spain, this artificial reef site reaches a maximum depth of approximately 28 metres. Access to the wreck is exclusively by boat. Due to the depth and the nature of the site, it is suited for intermediate divers. Water temperatures at this location remain consistently cold throughout the year, requiring appropriate thermal protection. Divers should be prepared for variable conditions typical of this marine environment.

The Army Tank reef on the Northwest Coast of Ireland is an artificial reef site formed by submerged M60 army tanks. This site is strictly for advanced divers due to the presence of strong currents and the depth, which averages 14 metres. Access to the site is by boat only. Divers can expect visibility ranging between 20 and 30 metres. Water temperatures remain consistently low throughout the year at approximately -2C. Given the environmental conditions and the nature of the site, it is recommended for experienced divers comfortable with current and deep-water navigation.