The Whale at Milln Reef is an intermediate dive site featuring a varied reef system that transitions from shallow coral gardens at 2 metres to deeper sections at 26 metres. Divers can explore the reef structure, which includes gorgonian fans in current-swept areas and ledges sheltering small groups of Harlequin Sweetlips. Marine life recorded at the site includes Whitetip Reef Sharks, Titan Triggerfish, and Emperor Angelfish, alongside common sightings of wrasses and Red Bass. Visibility typically ranges from 15 to 20 metres. Access is by boat only, and divers should be aware of sharp coral edges and potential jellyfish during the stinger season from November to May.

Boulders is a beginner-friendly boat dive located at Flynn Reef, featuring a combination of reef and wall topography. Divers can explore shallower reef sections starting at 8 metres, with the site extending to depths of 30 metres. Conditions are generally manageable, with mild currents and visibility ranging from 10 to 30 metres. Water temperatures remain warm throughout the year, fluctuating between 25C and 29C. When navigating the site, be aware of sharp coral and rocks near the wall. Divers should shuffle their feet when near sandy or rocky patches to avoid contact with stonefish, and maintain a safe distance from lionfish and sharks.

Three Sisters at Milln Reef features three distinct underwater structures comprising reef, pinnacle, and wall terrain. Divers and snorkellers can explore depths ranging from 5 to 30 metres, with an average depth of 26 metres. The site is accessed by boat, with mild currents making it suitable for drift diving. Visibility typically spans 15 to 25 metres. The topography includes walls anchored by gorgonian sea fans and sandy patches inhabited by garden eels. Mid-water columns host schools of fusiliers, snapper, and sweetlips, while the bottom is home to moray eels, lagoon rays, white-tip reef sharks, and sea turtles. Lionfish and stinging jellyfish may be present.

Tennis Courts at Flynn Reef is a reef and wall site offering drift diving opportunities. Suitable for intermediate divers, the site features depths ranging from 12 to 25 metres, with an average depth of 20 metres. Visibility typically spans 15 to 20 metres. Divers should expect mild currents, which are best managed by drifting with the flow. Boat access is required for this site, which is located 20 kilometres from shore. Hazards include deep water, lionfish, sharks, and stonefish. Stinger season occurs from November to May, during which full-body stinger suits are recommended. Territorial triggerfish may be present during nesting season.

Wild Side at Milln Reef is a boat-accessible site featuring reef walls that descend from 5 to 30 metres. The topography is defined by hard corals providing structure for various reef fish. Divers frequently encounter wrasses, while uncommon sightings include Napoleon Wrasse, Titan Triggerfish, Whitetip Reef Shark, and various butterflyfish and parrotfish species. The site experiences moderate currents, which can intensify near the reef points, requiring proficient buoyancy control. Visibility typically ranges from 15 to 25 metres. Stinger suits are recommended during the stinger season from November to May due to the presence of jellyfish. This site is suitable for intermediate divers and supports night diving.

Milln Reef is an outer Great Barrier Reef site featuring a diverse topography of shallow reef tops, walls, and pinnacles. The reef starts at 5 metres and descends to 30 metres, with an average depth of 10 metres. Suitable for both divers and snorkellers, the site offers mild currents and visibility ranging from 15 to 20 metres. Access is by boat only, with typical dives lasting 45 minutes. The site is well-suited for beginners, though divers should remain alert to boat traffic during surface ascents. Water temperatures remain pleasant between 25C and 29C throughout the year.

East Side Bommies at Moore Reef consists of a series of coral formations ranging from 5 to 20 metres in depth, with an average of 12 metres. This site is suitable for beginner divers, offering mild currents and visibility typically between 15 and 20 metres. Access is by boat only. The site is also suitable for night diving. Divers should be aware of potential hazards including jellyfish, sharks, sharp coral, stonefish, and strong currents. Reef sharks are present at the reef and should be observed from a distance. Water temperatures range from 24C to 30C throughout the year.

Thetford Reef is an outer Great Barrier Reef site featuring a diverse topography of shallow reef tops, canyons, and a wall that drops to 30 metres. Divers and snorkellers typically explore the 5 to 15 metre depth range. The site is accessible only by boat and is suitable for beginners due to mild currents that facilitate gentle drift dives. Visibility ranges from 8 to 40 metres, with the most reliable conditions occurring between May and October. Water temperatures fluctuate between 24C and 30C. Stinger suits are recommended from November to May due to the presence of jellyfish. Boat traffic is a hazard, so divers should remain close to guides when surfacing.