Blue Buoy is a reef site located at Tongue Reef, accessible only by boat. The site features depths ranging from 5 to 18 metres, with an average depth of 15 metres. Conditions are generally mild with visibility between 12 and 30 metres, making it suitable for beginner divers. Water temperatures remain warm throughout the year, ranging from 25C to 30C. Divers should be aware of potential hazards including boat traffic, sharp coral, and the presence of jellyfish, particularly between November and May when protective suits are recommended. Facilities available at the site include toilets, showers, equipment rental, and guided tours.

The Wedge is a boat-accessible reef site located on Tongue Reef, featuring a gentle wall that descends from 5 to 30 metres. The topography consists of branching corals and sand patches, making it suitable for beginners to practice drift diving in mild currents. Visibility typically ranges from 12 to 30 metres. Divers should be aware of potential hazards including boat traffic, deep sections, and the presence of jellyfish during the summer stinger season. Protective suits are recommended during the wet season from November to April. The site is accessible via boat charter and guided tours from Port Douglas.

Opal Reef is a shallow reef system featuring walls and drop-offs suitable for beginners. Located 50 kilometres from shore, the site requires boat access. Divers and snorkellers can explore depths between 2 and 10 metres, with visibility typically ranging from 12 to 18 metres. The area experiences moderate currents, requiring careful positioning near the reef edge. Water temperatures remain between 25C and 30C throughout the year. Equipment rental is available for those needing gear. When navigating the shallower sections, maintain distance from the reef to avoid sharp coral. Early morning visits are recommended for calmer water conditions and reduced boat traffic.

China Wall is a vertical drop-off on Tongue Reef that descends from 25 to 40 metres. This deep dive site is accessible only by boat and is suited for intermediate divers. The wall features gorgonias, sea whips, and nudibranchs, with turtles and reef fish frequently observed. Divers experience mild currents, typically around 0.25 knots, allowing for a gentle drift along the reef face. Visibility ranges from 15 to 30 metres. Due to the depth, divers must monitor nitrogen narcosis and decompression limits closely. Stonefish are present on the reef, so avoid touching any surfaces. The site is remote, and immediate medical assistance is not available.

St Crispin Reef is a large reef system located off the coast of Queensland, offering a wide depth range from 6 metres in the shallows to 30 metres in deeper sections. Access is exclusively by boat, with guided tours available to assist beginners. Visibility varies significantly, ranging from 8 to 40 metres depending on conditions. Divers should be aware of moderate currents and exercise caution regarding sea urchins and marine life interactions. The reef supports a variety of reef fish and invertebrates, including nudibranchs, feather stars, sea cucumbers, and giant clams. Reef sharks are present but typically shy, and moray eels may be found within reef crevices.

Mackay Reef is a Great Barrier Reef site located 38 kilometres from the shore, accessible only by boat. The reef topography features shallow sections starting at 1 metre, sloping to a maximum depth of 30 metres with an average of 18 metres. Conditions are variable, with visibility ranging from 15 to 25 metres and currents that can shift from mild to strong. The site is suitable for beginners, though caution is required around sharp coral. Water temperatures fluctuate between 24C and 29C throughout the year. Local operators provide air fills, equipment rental, and guided tours. Divers and snorkellers should follow all boat crew briefings regarding site safety and local conditions.

Lighthouse Bommie is a coral pinnacle located at Norman Reef that rises from deeper water to a shallow depth of 5 metres. The site is suitable for intermediate divers and is accessed exclusively via boat. Divers can expect depths ranging from 5 to 25 metres with an average of 15 metres. Moderate currents often sweep past the structure, making it a location for drift diving. Visibility typically ranges between 12 and 20 metres. Due to the potential for strong currents, divers should confirm conditions with their operator. Protective suits are recommended during the marine stinger season from November to May.

Oak Beach is a shore entry reef site in Port Douglas & Agincourt, Queensland, suitable for beginners seeking shallow water experiences. Conditions at this location are variable, with visibility often influenced by wind and recent rainfall. Divers and snorkellers should exercise caution regarding potential rip currents and surf at the shore break. When entering the water, shuffle your feet to avoid sharp coral and rocks. Always verify local conditions for jellyfish and crocodile warnings before entering. Species recorded around this area include green sea turtles, wrasses, snails, sea cucumbers, sea squirts, chromis, and hard coral. Parking is available at the site.