S-Buoy Coral Head is an exposed reef site in Kwajalein Atoll, accessible only by boat. The topography features a coral head ranging from 5 to 36 metres, allowing divers to transition from shallow reef exploration to deeper sections during a single 45-minute dive. Visibility typically spans 20 to 40 metres. Divers should expect moderate currents that may strengthen unexpectedly, necessitating careful planning and the use of a surface marker buoy. Hazards include sharks and potential entanglement risks within the reef structure. Water temperatures remain stable between 28 and 30 degrees Celsius. Always confirm local base access and facility availability before planning a trip to this site.

T-Buoy Coral Head is a reef site located within the sheltered waters of Kwajalein Atoll. Accessible directly from the shore, the site features a central coral head that serves as the primary focal point for divers. Conditions are generally warm, with water temperatures ranging between 28 and 30 degrees Celsius throughout the year. Divers should be prepared for a moderate current that requires careful positioning on the reef. Entry requires caution due to sharp rocks along the shoreline, and appropriate footwear is recommended. This site is suited for intermediate divers who can manage current flow during a shore-based dive.

R-Buoy Coral Head is a reef site located in Kwajalein Atoll, Marshall Islands. The topography features a coral head that drops from 8 metres to 25 metres, with an average depth of 14 metres. Divers can expect moderate currents and visibility ranging from 10 to 30 metres. Water temperatures remain consistent between 28 and 30 degrees Celsius throughout the year. Due to the presence of sharks, sharp coral, and moderate currents, this site is suited for intermediate divers with strong buoyancy control. Access is possible via boat or shore, though divers must remain alert for boat traffic and deploy a surface marker buoy when surfacing.

Troys Coral Head is a reef pinnacle located in the Kwajalein Atoll, featuring a structure that ranges from a shallow 5-metre cap down to 50 metres. The site is accessed exclusively by boat, with divers entering the water directly from the vessel. Visibility is consistently 30 metres, while water temperatures remain between 28 and 30 degrees Celsius. Due to variable currents and depths reaching 50 metres, this site is suited for intermediate divers with strong buoyancy control. Divers should exercise caution regarding sharp coral and rocks on the reef structure and maintain a safe distance from sharks present in the area.

North Loi Coral Head in Kwajalein Atoll is a shallow reef accessible directly from the shore. The site is suitable for beginners, though divers should remain aware of moderate currents and navigate carefully to avoid contact with sharp coral and rocks. Water temperatures remain stable between 28 and 30 degrees Celsius throughout the year. Marine life recorded at this site includes the painted frogfish, day octopus, zebra lionfish, and various nudibranch species such as Chromodoris and Tryon's Hypselodoris. Divers may also encounter wrasses, triggerfish, mantis shrimp, and pink skunk anemonefish. Always check with local staff regarding current visibility and entry conditions before planning a dive.

Vertical Wall in Kwajalein Atoll is a steep reef drop-off that descends rapidly from the reef crest. Divers experience an expansive, open-water environment with visibility typically ranging between 30 and 40 metres. Water temperatures remain consistent, fluctuating between 28 and 30 degrees Celsius throughout the year. This site is accessible only by boat, and the moderate currents require intermediate buoyancy skills and constant situational awareness. Because the floor drops quickly from 2 to 30 metres, divers must monitor their depth gauges continuously. Due to the presence of sharks and potential for strengthening currents, divers should establish a clear drift plan and surface-marker procedure with the boat crew before entry.

Kwaj-2 Coral Head is a reef and pinnacle site located within Kwajalein Atoll. This shore-accessible location offers a sheltered environment suitable for beginner divers looking to gain experience on a reef structure. Divers navigate depths ranging from 13 to 28 metres. Water temperatures remain consistent throughout the year, typically between 28 and 30 degrees Celsius. Conditions such as visibility and currents can be variable, so it is essential to check local reports before entering the water. As there are no confirmed facilities on-site, divers should arrive self-sufficient with all necessary equipment and water. Always monitor your surroundings and follow guide instructions during your dive.

Kwaj-1 Coral Head is a reef pinnacle in Kwajalein Atoll that rises from a depth of 36 metres to a shallow 5 metres. Divers typically experience 30 metres of visibility, allowing for clear views of the structure. The site requires boat access and is suited for intermediate divers due to moderate currents that can accelerate unexpectedly. Water temperatures remain warm, ranging from 28 to 30C. Marine life recorded here includes wrasses, spiny lobster, pufferfish, and various angelfish species such as the Flame and Japanese Pygmy Angelfish. Divers may also encounter sharks, scorpionfish, and reef stonefish. Use caution regarding sharp coral and boat traffic during entries.