The Corsair is an aircraft wreck located off the coast of Oahu, resting at depths between 32 and 35 metres. This site is strictly for advanced divers due to the significant depth and the strong, unpredictable currents that frequently affect the area. Visibility is typically good, ranging from 24 to 30 metres, allowing for clear views of the structure during descent. Access is exclusively by boat, and dives are generally short, averaging 15 minutes, to manage bottom time and gas consumption. Divers must maintain precise buoyancy control and monitor their ascent rates closely, as the depth provides little margin for error.

Reef 13 is a shallow shore-entry reef site located in Oahu, Hawaii. The site is suitable for beginners, with an average depth of 2 metres. Divers should be aware of moderate currents, surf, and sharp coral in the area. Visibility typically ranges from 3 to 10 metres, and a standard dive lasts approximately 40 minutes. Facilities available at the site include parking, toilets, showers, a rinse station, and a nearby dive shop. Species recorded around this area include various moray eels, wrasses, nudibranchs, and occasional sightings of octopus, scorpionfish, and whitetip reef sharks.

Rabbit Island features a combination of reef, drop-off, and wall topography located 1200 metres off the windward coast of Oahu. Divers encounter depths between 8 and 21 metres, with visibility ranging from 10 to 24 metres. The site is defined by strong currents that require advanced skills and precise buoyancy control. Marine life includes very common crabs and snails, common hermit crabs and Pacific white-spotted sea cucumbers, and uncommon sightings of yellow-edged moray, wrasses, Hawaiian convict surgeonfish, wedgetail triggerfish, sergeants, and sea cucumbers. Due to hazardous surf and shore break, boat access is mandatory. Divers must remain alert for sharks and manage air consumption carefully against the current.

Makapu'u Beach Park on Oahu offers a varied underwater landscape featuring reefs, walls, caves, and caverns. This shore-entry site is suited for intermediate divers due to the presence of strong currents, rip currents, and surf. Depths range from 4 to 18 metres, with an average of 12 metres. Visibility is highly variable, ranging from 3 to 30 metres. The site is accessible for night diving. Facilities available at the park include parking, toilets, showers, and a rinse station. Divers should be aware of hazards including jellyfish, sharp coral, and overhead environments within the caves and caverns.

Angler's Reef in Oahu is a diverse site featuring a combination of natural reef, wall, and artificial structures. Located 805 metres from shore, this site is accessible only by boat. Divers can expect depths ranging from 6 to 14 metres, with an average depth of 10 metres. The site is suitable for beginners, though conditions vary and strong currents are frequently encountered. Night diving is permitted at this location. Species recorded around this area include various moray eels, wrasses, groupers, parrotfish, triggerfish, and reef sharks. Divers should be aware of the presence of sharks and strong currents when planning their visit.

Koko Craters is a marine site located 500 metres off the coast of Oahu, featuring a combination of natural reef and artificial reef structures. The site is suitable for beginners, with an average depth of 10 metres and a total depth range between 9 and 12 metres. Access is by boat only. Conditions vary, with visibility ranging from 12 to 45 metres and currents typically described as mild. Divers should be aware of potential hazards including boat traffic, sharp coral, and the possibility of strong currents. A typical dive at this location lasts approximately 45 minutes.

Halona Blow Hole on Oahu offers a shallow reef and cave dive ranging from 3 to 7 metres. This site features an overhead cave environment that requires intermediate skill levels to navigate safely. Divers experience visibility between 9 and 12 metres with water temperatures ranging from 24 to 27C. Access is via a shore entry that requires caution due to surf, shore break, and sharp coral. Strong currents are common throughout the area, necessitating constant attention during the dive. Parking is available on site, though the area can become crowded on weekends. Typical dive duration is approximately 40 minutes.

Electric Beach is a shore-entry reef dive located in Oahu. The site features shallow reef topography, providing a forgiving environment for practising buoyancy and observation skills. Water temperatures remain between 24 and 27 degrees Celsius throughout the year. Divers and snorkellers frequently encounter Pacific Orange-spine Unicornfish, Redlip Parrotfish, wrasses, and Hawaiian Convict Surgeonfish. Other species recorded here include the Pacific Sailfin Tang, Fourspot Butterflyfish, Lagoon Triggerfish, Bird Wrasse, Palenose Parrotfish, and Bluefin Trevally. Rarer sightings include the Day Octopus, Achilles Tang, Yellow-edged Moray, and Turkey Moray. Visibility and currents vary considerably, so check local conditions before entering the water. Facilities are not guaranteed, so arrive prepared with all necessary equipment.