Horseshoe Reef in Kona is a marine reef site accessible exclusively by boat. The site features a depth range between 6 and 18 metres, with an average depth of 18 metres. Divers can expect mild current conditions throughout the area. The water temperature remains consistent, ranging from 24C to 26C depending on the month. Facilities available in the vicinity include parking, toilets, showers, a dive shop, air fills, equipment rental, and boat charter services. This site is suitable for beginner divers. Please be aware that sharks are present in this marine environment.

Kohala Coast near Kona offers a combination of natural reef and artificial reef structures. Divers can expect depths ranging from 9 to 24 metres, with an average depth of 14 metres. The site is accessible by both shore and boat, featuring mild currents and visibility typically between 15 and 30 metres. Water temperatures remain consistent throughout the year, ranging from 24C to 26C. The site supports night diving and is suited for intermediate divers. Facilities available in the area include air fills, equipment rental, guided tours, showers, toilets, and parking. Hazards to be aware of include boat traffic, deep sections, overhead environments, sharks, and sharp coral.

Outside Crystal Cove in Kona is a reef and pinnacle site accessible only by boat. The topography features a pinnacle with a top at 11 metres and a base at 21 metres, alongside a coral ledge leading toward a black sand cove. Divers can explore coral islands and search for small invertebrates and nudibranchs. Conditions are generally mild, though divers should be aware of potential surf and surge. Depths range from 6 to 21 metres with an average of 16 metres. Visibility at this site is between 2 and 8 metres. Water temperatures remain consistent throughout the year, ranging from 24 to 26 degrees Celsius.

Lava Dome in Kona is a marine site featuring a combination of natural reef and cavern topography. Accessible only by boat, the site offers depths ranging from 1 to 12 metres, with an average depth of 9 metres. Conditions are generally stable with mild currents and visibility between 15 and 30 metres. The site is suitable for beginners, though divers should be aware of potential surge and the overhead environment within the cavern sections. Water temperatures remain consistent throughout the year, typically between 25 and 26 degrees Celsius. A typical dive at this location lasts approximately 50 minutes.

NudiMadness is a shallow reef site in Kona, United States, offering a relaxed shore entry. The site is well-suited for beginners, with depths ranging between 1 and 2 metres. Divers can expect mild currents and visibility typically between 3 and 15 metres. Water temperatures remain consistent throughout the year, ranging from 25C to 27C. Facilities at the site include showers for post-dive rinsing. Hazards to be aware of include surf, sharp coral, sea urchins, and periods of low visibility. The site is ideal for those interested in slow-paced, shallow-water exploration.

Koai'e Cove is a marine reef site situated at an ancient fishing village in Kona. Divers and snorkellers access the water via a small rocky inlet featuring a coral rubble beach. The site is suitable for intermediate skill levels, with depths ranging from 1 to 9 metres and an average depth of 5 metres. Conditions vary, with visibility between 3 and 15 metres and moderate currents. Hazards include surf, rip currents, and sharp coral. Species recorded around this area include wrasses, yellow tang, flagtail triggerfish, slate pencil urchins, and various moray eels. Typical dives last approximately 45 minutes.

Waialea Bay in Kona offers a shallow reef environment suitable for beginners, with depths ranging from 3 to 9 metres. The site features diverse coral topography, with the most developed reef structures located around the rocky points at the centre and ends of the bay. Shore entry is standard, and divers can expect mild currents and visibility between 3 and 10 metres. Marine life includes common sightings of wrasses, Ornate Butterflyfish, Bluefin Trevally, and various surgeonfish. Divers may also encounter uncommon species such as Green Sea Turtles, Spotted Eagle Rays, and several types of moray eels. Hazards include sharp coral, sea urchins, and surf conditions.

Mahukona, located on the Big Island, offers a diverse underwater environment featuring a natural reef, wreck debris, and artificial reef structures. Suitable for beginners, the site ranges from 1 to 12 metres in depth with an average of 10 metres. Visibility typically spans 15 to 30 metres, supported by mild currents and water temperatures between 25 and 27 degrees Celsius. Divers and snorkellers frequently encounter wrasses and yellow tang, alongside less common species such as redlip parrotfish, moorish idol, and various triggerfish. Shore and boat access are available, though users should exercise caution regarding surf, surge, and sharp coral at the entry point. Night diving is also permitted at this location.