Bubble Cave in the Matavai Area is a reef and cavern site featuring an air pocket within the cave structure. Divers can observe stalactites and encrusting life on the cavern walls. The site ranges in depth from 8 to 18 metres and requires boat access. Conditions typically include mild currents and visibility between 30 and 80 metres. Species recorded around this area include whitetip reef sharks, day octopuses, wrasses, and various moray eels. Due to the overhead environment and potential surge, this site is best suited for divers comfortable with cavern diving. Typical dive times are approximately 45 minutes.

Wormhole is a cavern dive located in the Matavai Area of Niue. Divers enter through a swim-through to explore the cavern, which features natural light filtering through holes in the ceiling. The site offers depths ranging from 10 to 22 metres, with an average depth of 15 metres. After exploring the cavern, the dive continues along the adjacent reef. This site requires boat access and is suitable for intermediate divers. Conditions include mild currents and visibility between 30 and 80 metres. Water temperatures range from 26C to 29C throughout the year. The site presents an overhead environment hazard. Air fills and equipment rental are available.

Chimney in the Matavai Area of Niue is a complex site featuring a vertical chimney that leads to a cavern at its base. Divers descend through the chimney, exiting at 28 metres before exploring table corals located to the south between 20 and 25 metres. The site includes a narrowing gutter to the north and various swim-throughs at 5 metres, ideal for safety stops. With depths ranging from 5 to 30 metres and visibility between 30 and 80 metres, this site requires boat access. Hazards include surge and the overhead environment of the cavern. Species recorded around this area include whitetip reef sharks, day octopus, and various wrasses.

No. 7 is a reef site located 500 metres offshore in the Matavai Area of Niue. Divers typically access the site by boat and descend via a mooring line to explore the surrounding reef. The topography features a coral bommie situated 10 metres inshore from the mooring, which includes a narrow swim-through and encrusting coral. Depths at this site range from 10 to 25 metres, with an average of 20 metres. Conditions are generally mild with visibility ranging between 30 and 80 metres. The site is suitable for intermediate divers and supports night diving, with typical dive durations of 45 minutes.

The Tunnel in the Matavai Area is a distinctive dive site featuring a cavernous tunnel swim-through that exits into the deep blue. Divers typically descend over a sandy bottom to explore an area of soft corals before navigating the tunnel structure. The site encompasses reef, wall, and cavern topography at depths ranging from 5 to 25 metres, with an average of 15 metres. Access is by boat, located 500 metres from shore. Conditions include moderate currents and visibility between 20 and 50 metres. Species recorded around this area include whitetip reef sharks, day octopus, various moray eels, and numerous reef fish such as wrasses, angelfish, and surgeonfish.

Sand River is a distinctive dive site near Tepa Point, characterised by a rare sandy channel that cuts through the rocky reef. Accessible only by boat, the site features a 10-metre-wide sandy corridor starting at 8 metres, which slopes downwards before reaching depths exceeding 40 metres. North of this channel, two large bommies located between 15 and 20 metres provide shelter for reef fish. Visibility is generally high, ranging from 30 to 80 metres, with mild currents. Species recorded around this area include whitetip reef sharks, day octopus, various moray eels, and emperor angelfish. Divers should be aware of potential hazards including sea urchins, stonefish, and sharks.

Purple Heart is a sloping reef located within the Dome Cave and Purple Heart Area of Niue. The site is characterised by extensive table coral formations that extend from a depth of 5 metres down to 20 metres, with an average depth of 15 metres. Divers typically experience mild currents and visibility ranging from 30 to 80 metres. Access to this site is by boat only. The area is suitable for beginner divers, with typical dive times around 45 minutes. Species recorded around this area include whitetip reef sharks, day octopuses, giant morays, and various wrasses. Divers should be aware of the presence of lionfish.

Dome Cave and Purple Heart Area is a boat-accessed dive site featuring a cave system and drop-off. The site offers depths ranging from 10 to 30 metres, with an average depth of 25 metres. Divers encounter an overhead environment within the cave, which requires the use of torches. Conditions are generally mild, though divers should be aware of potential surge and sharp coral. Visibility is high, typically between 30 and 80 metres. Due to the overhead environment and depth, this site is suited for intermediate divers. Typical dive times are approximately 50 minutes.