Hale O Honu, also known as the House of Turtles, is a reef site in Kauai featuring 11 moorings spread across 8 acres. The topography consists of sand, lava crevices, and outcroppings. Divers can expect depths ranging from 6 to 20 metres, with an average depth of 12 metres. Access is by boat only. Conditions are generally mild with visibility around 15 metres. Divers should be aware of potential hazards including sharp coral and surge. This site is suitable for beginners.

Hale O Honu is a reef and artificial reef site located in Kauai, United States. Accessible only by boat, the site features depths ranging from 6 to 18 metres with an average of 12 metres. Divers encounter mild currents and visibility between 15 and 50 metres. The site is home to a variety of marine life, including Spanish Dancer, Painted Moray, Leaf Scorpionfish, Chromodoris Nudibranch, Zebra Moray, Yellow-edged Moray, White-spotted Octopus, Snowflake Moray, Hawaiian Convict Surgeonfish, Banded Coral Shrimp, sea slugs, wrasses, pufferfish, and Speckled Butterflyfish. Typical dives last 50 minutes. Hazards include sharp coral and surge. The site is suitable for intermediate divers.

Nualolo Kai is a reef site located along the Na Pali Coast of Kauai. Accessible only by permitted boat tours, the area features an ancient Hawaiian village site on the adjacent shore. The reef environment is suited for intermediate divers and snorkellers, with depths ranging from 3 to 7 metres and an average depth of 5 metres. Conditions include mild currents and visibility typically between 6 and 10 metres. Water temperatures remain consistent throughout the year, ranging from 24 to 27 degrees Celsius. Divers and snorkellers should be aware of potential hazards including boat traffic, rip currents, sharp coral, and surf.

Ambers Arches is defined by large underwater boulders that form extensive caverns. This site is suited for advanced divers due to the technical nature of navigating the cavernous topography and the presence of strong currents. Access is possible via both shore and boat entry. Visibility at the site varies significantly, ranging from 1 to 24 metres. Water temperatures are warm, fluctuating between 25C and 30C throughout the year. Divers should be prepared for variable conditions when exploring the boulder formations.

Salt Pond Beach Park on Kauai features a naturally protected lagoon suitable for both diving and snorkelling. The site consists of a reef environment with depths ranging from 1 to 10 metres, averaging 5 metres. Snorkelling is best in the rocky coves located on the far east side of the beach. Conditions vary, with visibility typically between 5 and 15 metres and mild currents. Shore access is available, and the site is suitable for beginners. Hazards include jellyfish, sharp coral, strong currents, and surf. Species recorded around this area include wrasses, Hawaiian convict surgeonfish, bluespine unicornfish, wedgetail triggerfish, butterflyfish, spotted boxfish, moorish idols, moray eels, green sea turtles, and Hawaiian monk seals.

Arches is an advanced open-water dive site located off Niihau, featuring a complex topography of reef, wall, cavern, and drop-off structures. Divers navigate depths ranging from 10 to 32 metres, with an average depth of 25 metres. The site is characterised by strong currents and visibility between 30 and 40 metres. Due to the presence of overhead environments within the caverns and significant depth profiles, this site requires advanced buoyancy control and careful gas management. Access is strictly by boat to avoid dangerous surf and shore break zones. Divers should be prepared for potential boat traffic upon surfacing and carry a surface marker buoy.

Turtle Bluffs is a marine dive site located just west of General Store. The site is exposed to open water, resulting in variable conditions with visibility ranging from 3 to 30 metres and potential for strong currents. Due to its exposed nature, this site is accessed by boat. It is suitable for advanced divers who are comfortable managing current. The topography is characterised by a cleaning station environment. Water temperatures fluctuate between 25C and 30C throughout the year.

Lawai Beach in Kauai is a shore-access reef site situated directly in front of the Beach House Restaurant. The reef lies close to the shoreline, allowing for an accessible swim to explore the underwater topography. Snorkellers typically spend around 45 minutes in the water, which maintains temperatures between 24C and 27C throughout the year. Visibility at this site varies between 3 and 10 metres, with an average depth of 3 metres. Due to the presence of surf, rip currents, and sharp coral, this site is best suited for intermediate-level snorkellers. Facilities including parking, toilets, and showers are available for visitors.