Grouper Island, located 8 kilometres off Emerald Beach, is a reef site accessible only by boat. Divers explore depths between 5 and 16 metres, with an average depth of 14 metres. The site features rocky structures and plate coral formations. Marine life observed here includes wobbegong sharks, green morays, wrasses, goatfish, sea stars, sea hares, snails, and various nudibranchs such as the splendid goniobranch and Bennett's hypselodoris. Conditions vary, with visibility ranging from 8 to 35 metres and water temperatures between 20C and 26C. Divers must manage strong, unpredictable currents and surge near the reef. Boat traffic is a potential hazard at the surface.

Northern Gutters is a reef and canyon system located off Emerald Beach, Australia. This boat-only site features dramatic channels and swim-throughs ranging from 8 to 30 metres in depth, with an average depth of 15 metres. The site is well-suited for intermediate divers, as it is frequently conducted as a drift dive due to moderate currents. Visibility varies significantly from 5 to 35 metres. Divers must remain aware of boat traffic and potential strong currents. The site offers a typical dive time of 50 minutes, with water temperatures ranging between 20C and 25C throughout the year.

Split Solitary Island, located off the coast of Coffs Harbour, features a reef and drop-off topography suitable for beginners. The site ranges from shallow reef sections to a maximum depth of 21 metres, with an average depth of 15 metres. Access is by boat only, and the site experiences mild currents. Visibility typically fluctuates between 5 and 15 metres. Divers should be aware of sharp coral near the reef edge and potential changes in visibility. Species recorded around this area include various nudibranchs, wrasses, moray eels, and wobbegong sharks. Guided tours and equipment rentals are available locally for those exploring this marine environment.

Woolgoolga Headland at Emerald Beach offers a shallow shore dive and snorkel experience across a rocky reef. Depths range from 5 to 12 metres, with an average of 9 metres. The site is suitable for beginners, though conditions vary; the rock pool area is generally sheltered, but divers should be aware of potential rip currents and surf. Entry is from the shore, and high tide is recommended to provide more clearance over shallow reef sections. Facilities including parking and a cafe are available nearby. Divers should exercise caution regarding sharp oysters on rocks, jellyfish, and stonefish.

Coral Gardens is a reef site located off Split Solitary Island near Coffs Harbour. The topography features a reef slope that transitions into a dramatic drop-off, with depths ranging from 5 to 18 metres. This boat-only site is suited for intermediate divers due to moderate currents that can shift with the tide. Visibility typically spans 8 to 40 metres. Divers should remain aware of boat traffic at the surface and use an SMB upon ascent. Facilities including equipment rental and air fills are available in Coffs Harbour. The site supports night diving and offers a typical dive duration of 50 minutes.

South Boulder at South Solitary Island features a steep wall dropping from 10 to 30 metres. This site is a boat-only dive, often utilised for drift diving due to moderate currents that can become strong and unpredictable. Visibility ranges from 8 to 35 metres. Divers may encounter Grey Nurse Sharks, leopard sharks, wobbegongs, black cod, blue groper, loggerhead turtles, and giant cuttlefish. Smaller marine life includes Jorunna nudibranchs, hawkfish, grunts, sea stars, and clownfish. Water temperatures fluctuate between 20C and 26C throughout the year. Divers should check current directions before entry and consider planning deeper sections around slack water to manage the site's demanding conditions.

Grey Nurse Gutters is a network of channels and canyons carved through the reef system at South Solitary Island. The site features sandy channels between rocky walls, ranging in depth from 10 to 18 metres with an average of 12 metres. Divers navigate these gutters by boat, experiencing mild currents and visibility between 10 and 30 metres. Thermoclines may occur due to the mixing of tropical and temperate waters. This site is suited for intermediate divers who possess solid buoyancy control to navigate the narrow channels and rocky structures without contact. The area is remote and offshore, requiring boat access for all dives.

Cleaner Station is a diverse marine site located off the Mid North Coast of New South Wales. This boat-accessed location features a complex topography of reefs, walls, and caves at depths between 10 and 20 metres. The site is subject to moderate currents, making it suitable for drift dives, though conditions can be unpredictable as currents swing around the island. Visibility typically ranges from 10 to 30 metres. Due to the presence of strong currents and boat traffic, this site is best suited for intermediate divers. Divers should remain close to their group during ascents and deploy a surface marker buoy to ensure visibility to passing vessels.