The Taioma Wreck is an artificial reef located off Mayor Island, New Zealand. Resting at depths between 22 and 27 metres, the vessel provides an overhead environment with specific sections suitable for penetration. Divers should expect moderate currents and visibility ranging from 5 to 10 metres, necessitating the use of a torch for navigation. Access to this site is by boat only, and the depth and conditions require an Advanced Open Water certification. Due to the potential for shifting conditions and boat traffic, carrying a surface marker buoy is recommended. Dives typically last around 40 minutes, with slack water providing the most favourable conditions for exploration.

Astrolabe Reef (Ōtāiti) is a prominent marine site located 22 kilometres from the shore of Mayor Island. The site features a reef system that rises to a minimum depth of 8 metres, alongside the wreckage of the MV Rena. Due to the depth range of 8 to 70 metres and the presence of strong currents, this site is suited for advanced divers. Access is strictly by boat. Divers should be aware of potential hazards including entanglement, sharp coral, strong currents, and surface surf. The site offers a varied topography for exploration, though conditions can be variable.

Okaparu Reef is a fully submerged rocky garden spanning five acres off Mayor Island. The site features an upper surface at a depth of 5 metres, with the reef extending down to 40 metres. Due to the presence of moderate currents, surge, and significant depth, this location is suited for advanced snorkelers. Access to the reef is by boat only. Water temperatures at the site fluctuate between 15C and 22C throughout the year. Snorkelers should be aware of hazards including the deep water, sharp coral, and strong currents present in the area.

Rabbit Island, situated 500 metres from the shore of Mayor Island, features a diverse underwater landscape composed of natural reef structures and artificial reef elements. The northern side of the island is defined by fringing rock outcrops. This site is suited for advanced divers, as it is subject to strong currents and potential surf conditions. Depths at the site range from 5 to 30 metres. Access is available via both shore and boat entry. With water temperatures fluctuating between 15C and 21C, the site is also suitable for snorkelling, holding a rating of 4 out of 5.

Rurima Island Lagoon is a wide, shallow reef system located north of White Island. This site features a mix of reef and wreck topography, reaching depths of up to 30 metres. Accessible only by boat, the site is situated 9000 metres from the shore. The area provides a habitat for a variety of temperate marine life, including reef fish and invertebrates. Water temperatures fluctuate between 15C and 21C throughout the year. Due to the depth and conditions, this site is best suited for intermediate divers, though it also offers opportunities for snorkelling.

Moturiki Island is a shore-accessible reef site located off the main beach of Mount Maunganui. The topography features rocky shores and remnants of an old aquarium wall, which now functions as an artificial reef structure. Depths start at 1 metre, making the site suitable for beginners. Conditions are variable, with mild currents and potential for surf and surge. Divers and snorkellers should remain aware of boat traffic in the area. Parking is available for visitors. The water temperature ranges from 15C to 22C throughout the year.

Karewa, located off Mayor Island, offers a combination of reef and wreck diving. The site features depths ranging from 10 to 22 metres, with an average depth of 15 metres, making it suitable for beginner divers. Access is by boat only, situated 6000 metres from the shore. Divers can expect visibility between 5 and 10 metres. While currents are generally mild, they can strengthen without warning, and surf conditions at the entry point may vary. Divers should confirm local conditions with a charter operator before departure. The site is accessible year-round, with water temperatures fluctuating between 15C and 22C throughout the year.

The Seafire wreck is an artificial reef located off White Island, New Zealand. Resting at depths between 7 and 30 metres, the site offers a varied profile suitable for intermediate divers with wreck certification. The upper structure provides shallower exploration, while the deeper sections reach 30 metres. Divers should expect moderate currents and variable visibility ranging from 5 to 20 metres. Due to the nature of the wreck, hazards include potential entanglement and sharp metal edges. Water temperatures fluctuate between 15 and 21 degrees Celsius throughout the year. Access to this site is by boat only, and divers must maintain close contact with their team to manage navigation in changing conditions.