Admiralty Anchorage is a diverse boat dive site off Lord Howe Island, New South Wales, featuring a complex system of reefs, pinnacles, walls, and caves. Divers can explore depths ranging from 15 to 40 metres, with an average depth of 25 metres. The site is subject to moderate currents due to the convergence of five major ocean currents, which also influence the local water temperatures. Visibility is variable, ranging from 15 to 40 metres. Due to the depth and lack of a local decompression chamber, careful planning of bottom times and safety stops is essential for all divers. This site is suited for intermediate divers.

Neds Beach in New South Wales is a shallow reef site suitable for beginners, offering depths between 1 and 3 metres. Entry is from the shore, where the water is calm with mild currents and visibility ranging from 10 to 20 metres. Divers and snorkellers frequently encounter wrasses, while less common sightings include green and hawksbill sea turtles, requiem sharks, blue-barred parrotfish, and various butterflyfish. Nudibranchs and flatworms are also present. Visitors should shuffle their feet when entering and exiting to avoid sharp coral and rocks. Equipment rental and guided tours are available on-site to assist with navigation and identifying local reef life.

Little Ruperts Reef is a marine reef site located 500 metres offshore in New South Wales. The reef topography features a drop-off ranging from 8 metres to 20 metres, with an average depth of 15 metres. Access is strictly by boat, and divers should be mindful of boat movement during entry and exit. Visibility typically ranges between 20 and 40 metres, though it can be variable depending on weather conditions. The site is suited to intermediate divers due to moderate currents and the presence of sharp coral and rocks. Typical dive times are approximately 50 minutes. Local facilities include parking, rinse stations, air fills, equipment rental, and boat charters.

Commet Hole is a sheltered reef site located within a lagoon off Lord Howe Island, New South Wales. This shallow area features depths ranging from 3 to 8 metres, with an average depth of 7 metres. The site is well-suited for beginners due to its mild currents and manageable conditions. Visibility typically ranges between 10 and 15 metres. Access is by boat only. Divers and snorkellers should be aware of the presence of jellyfish and sea urchins. Galapagos sharks are frequently encountered at this location. The site is also suitable for night diving.

Lord Howe Island features a diverse underwater landscape of reefs, pinnacles, walls, and caverns located 5000 metres offshore. Divers experience depths between 5 and 35 metres with visibility ranging from 15 to 40 metres. The area sits at the convergence of five major ocean currents, resulting in moderate and sometimes unpredictable conditions. Marine life includes rare sightings of Giant Cuttlefish, Spanish Dancer, and various nudibranchs, alongside wrasses and moray eels. Intermediate divers should be aware of potential rip currents and strong water movement. Access is available via both shore and boat, with guided tours and equipment rental provided by local dive shops.

Ball's Pyramid is a sheer volcanic spire rising from the ocean floor, offering a dramatic underwater landscape of reefs, pinnacles, and caves. Divers and snorkellers can expect depths ranging from 5 to 40 metres, with an average of 25 metres. Visibility is excellent, typically between 30 and 40 metres. Access is by boat only, and the site is suited for intermediate divers due to moderate currents, surge, and the presence of overhead cave environments. When diving the caves, a torch is recommended. Maintain awareness of bottom time and buoyancy control, as the site features significant depth and potential for strong currents near the rock face.