Lydgate Beach Park features Keiki Pond, an artificial seawater pool enclosed by a stone breakwater. This structure creates a sheltered environment suitable for beginners and snorkelers. The site reaches depths of 1 to 4 metres, with an average of 2 metres. Visibility varies between 3 and 10 metres. Marine life observed within the pool includes Hawaiian Convict Surgeonfish, wrasses, sergeants, crabs, and various butterflyfish species. Rarer sightings include white-spotted puffers, spiny lobsters, slate pencil urchins, lefteye flounder, bluefin trevally, and moorish idols. Be aware of potential jellyfish and surf conditions. Shore access is available, supported by parking, toilets, and showers.

Anini Beach features one of the longest and widest fringing reefs in Hawaii, creating a shallow lagoon environment. The site is suitable for beginners, with depths ranging from 2 to 5 metres and an average depth of 3 metres. Access is via the shore, and the area includes facilities such as parking, toilets, and showers. Divers and snorkellers should be aware that conditions can vary, with potential hazards including strong currents, rip currents, surf, and sharp coral. Visibility typically ranges between 5 and 15 metres, and a standard dive lasts approximately 60 minutes.

Hideaways Beach, also known as Pali Ke Kua, is a reef site in Kauai featuring spur and groove reef formations. Divers and snorkellers can explore depths ranging from 3 to 15 metres, with an average depth of 5 metres. Access is via a steep trail from the shore or by kayak. Conditions vary, with visibility typically between 5 and 20 metres and moderate currents. The site is suitable for intermediate divers. Hazards include surf, rip currents, strong currents, sharp coral, jellyfish, and sharks. Water temperatures remain consistent throughout the year, ranging from 23C to 26C.

Kipu Kai is a secluded reef site located off the coast of Kauai. Accessible only by boat, this location offers a snorkel rating of 4 out of 5. The topography features a reef situated near the cliffs. Water temperatures at this site range from 24C to 27C throughout the year. Due to the nature of the location, visitors should be aware of strong currents that can affect conditions. This site is suitable for those seeking a boat-accessed snorkeling experience in a private, quiet setting.

Tunnels Beach, also known as Makua Beach, is a shore-access site on the north coast of Kauai featuring a complex reef system with caves and drop-offs. Located 50 metres from the shore, the site reaches depths of 1 to 6 metres, with an average of 4 metres. Conditions vary, with visibility ranging from 3 to 12 metres and strong currents present. Due to the presence of surf, rip currents, and overhead environments within the cave structures, this site is suited for intermediate divers and snorkellers. Facilities at the beach include parking, toilets, and showers. Divers and snorkellers should be aware of sharp coral and sea urchins in the area.

Ke'e Beach is situated at the northernmost point accessible by car on Kauai, positioned directly beneath the Napali Coast cliffs. This shore-entry site features a shallow reef environment with an average depth of 1 to 2 metres, making it suitable for beginners. Visibility typically ranges between 5 and 15 metres. Water temperatures remain consistent throughout the year, fluctuating between 24C and 27C. Visitors should be aware of potential hazards, including surf, strong currents, and sharp coral. Facilities available at the site include parking, toilets, and showers.

Three Fingers is named for the three distinct lava formations that characterise the underwater topography. Located just outside the harbour on Kauai, this site is accessible by boat or shore entry. Conditions at the site are variable, with visibility ranging from 7 to 30 metres and currents that can be strong. Due to the potential for strong currents, this site is suited for advanced divers. Water temperatures remain consistent throughout the year, typically between 24 and 27 degrees Celsius. Divers should be prepared for changing conditions when planning their visit to this lava-formed site.