Big Buoy offers a proper drift dive along a reef wall studded with pinnacles, where moderate currents carry you past some of Queensland's most reliable marine encounters. The wall drops from 5 to 40 metres, and you'll cover serious ground as the current sweeps you along the structure. Visibility ranges from 15 to 30 metres, giving you excellent sightlines to spot the site's standout residents. Manta rays cruise the blue water off the wall, whilst reef sharks patrol the deeper sections. You'll find giant clams embedded in the reef face, their mantles creating vivid splashes of colour against the coral. Maori wrasse appear surprisingly unperturbed by divers, often approaching close enough for proper observation. The pinnacles harbour cod in the shadows and schools of barracuda in mid-water. Sea turtles graze the reef top, and you'll spot clownfish amongst the anemones, parrotfish working the coral, and sweetlips sheltering in the overhangs. This is a boat-only site with active marine traffic, so surface awareness matters. The current dictates your dive plan here, so you'll need solid buoyancy control and the confidence to work with the flow rather than fight it. The variety of depth and structure means you can tailor your profile, but the real reward comes from letting the current show you the reef.

This site pairs a headland point with an eastward shoreline reef, giving beginner divers a gentle introduction to wall and drift diving. The shallower reef runs from 5 metres, making it approachable for new divers, while the drop-off extends to 25 metres for those ready to go a little deeper. Visibility ranges from 10 to 35 metres in the clearer conditions. Expect to see sea turtles, giant clams, clownfish, and parrotfish on the reef, with eagle rays and manta rays possible in open water. Red bass, maori wrasse, and reef sharks add interest along the wall. Current runs moderate, so stay close to your guide.

Harrys Bommie sits at a consistent 16 metres, making it a straightforward dive for beginners who are comfortable descending to moderate depths with a guide. Visibility ranges from 10 to 30 metres, so on a clear day you can take in the whole structure from a distance. The current is generally mild, which lets you hover and watch without fighting to hold position. Manta rays and grey reef sharks are among the more striking visitors here, while coral trout, groupers, fusiliers, and mackerel fill out the water column. Keep an eye out for jellyfish, particularly during certain seasons.

Turtle Bay lives up to its name, with loggerhead turtles a reliable presence across the site's depth range of 5 to 22 metres. Visibility runs from 10 to 30 metres in the clearer conditions, giving you plenty of time to watch grey reef sharks and white-tip reef sharks working the deeper water. Moderate current pulls through regularly, which draws in schools of yellow tail fusiliers, trevally, and mackerel, so position yourself accordingly and let the fish come to you. Giant clams and sea fans mark the reef structure, while parrotfish and red bass fill out the mid-water. Check for jellyfish before entering, particularly in the shallower sections.

Nursery Bommie sits in the deeper waters of Agincourt Reef 2, reaching 25 metres, with visibility ranging from 12 to 30 metres depending on conditions. Despite the depth, mild currents keep things manageable for newer divers on a guided boat dive. The site rewards patient observers: look closely for leaf scorpionfish and nudibranchs tucked into the reef structure, while lionfish hover nearby. Schools of fusiliers, blue-striped snapper, and surgeonfish move through the water column, and clownfish are reliably found in their anemones. Barracuda and trevally occasionally cruise the edges, and rock cod tend to sit still long enough for a good look.

Crack a Jack earns its name from the dense schools of jacks that sweep through the water column here, often accompanied by fusiliers and clouds of glass fish that part around you as you descend. The reef runs from a snorkeller-friendly 5 metres down to 36 metres, putting serious depth on the table for those who want it. Visibility typically ranges from 15 to 30 metres, so you can watch the action from a distance before committing. Current stays mild, which helps. Look carefully into the gorgonian fans for pygmy seahorses, and keep an eye on the sandy margins for marbled stingray and sea snakes. Whitetip and gray reef sharks work the deeper sections regularly. Watch for jellyfish throughout the water column and stay aware of boat traffic on ascent.

Agincourt sits at the outer edge of the Great Barrier Reef, where the ribbon reefs form long, narrow structures with walls, pinnacles, and shallow reef tops starting at just 2 metres. Visibility regularly reaches 15 to 30 metres in these waters, so even first-time divers get a clear view of what's around them. You can drift gently along the reef with the current rather than fighting it, which makes exploring easier. Keep an eye out for turtles, clownfish, honeycomb grouper, and blue barred parrotfish on the reef. Reef sharks and nurse sharks patrol the area too, which sounds intimidating but is perfectly normal on a healthy reef.

Castle Rock sits on Agincourt Reef, a ribbon reef on the outer edge of the Great Barrier Reef accessible only by boat. The reef structure runs from the shallows down to around 24 metres, with visibility commonly reaching 15 to 30 metres in the crystal clear water. Currents are variable, so check conditions before you get in. Beginners will feel comfortable in the shallower sections, where sea turtles, giant clams, and schools of fusiliers and surgeonfish are regular sights. Snappers, sweetlips, and trevally cruise the mid-water, while whitetip reef sharks rest on the sandy bottom. Stay clear of lionfish, and keep an eye out for jellyfish near the surface.