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.

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.

Mana Crack is an 11-mile long sunken barrier reef located off the coast of Niihau. As the furthest offshore dive site in Hawaii, it features numerous drop points along its length. Due to the absence of moorings and the presence of strong currents, this site is strictly for advanced divers and is accessed exclusively via live boat dives. Visibility at the site varies, ranging from 1 to 30 metres. Water temperatures remain consistent throughout the year, typically between 24C and 27C. Divers should be prepared for challenging conditions at this remote offshore location.

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.

Fish Bowls in Kauai is a diverse dive site featuring a combination of reef, artificial reef, and canyon topography. Divers can expect depths ranging from 14 to 29 metres, with an average depth of 21 metres. Access to this site is by boat only. Conditions are variable, with moderate currents and visibility typically between 15 and 30 metres. The water temperature ranges from 23 to 26 degrees Celsius throughout the year. Due to the presence of sharp coral, strong currents, and potential surf, this site is best suited for intermediate divers. A typical dive duration at this location is 45 minutes.

Koloa Landing in Kauai is a shore-entry reef site suitable for beginners. Divers and snorkellers can explore depths ranging from 3 to 18 metres, with an average depth of 10 metres. Conditions vary, with visibility typically between 15 and 30 metres and mild currents. The site is accessible for night diving, with typical dives lasting around 45 minutes. Hazards to be aware of include boat traffic, surf, surge, and potential for low visibility. Facilities at the location include parking and toilets.