Agincourt Reefs
Depth is the range from the top of the site to its usual maximum; "recommended cert" is the mainstream-agency level operators usually ask for, not a legal rule. Currents and visibility change daily — treat everything here as planning ranges.
The Agincourt complex is the southern tail of the ribbon system, close enough to Port Douglas for morning departures yet perched right on the shelf edge where the water runs clean. Operators spread across dozens of moorings: one drops onto bommie fields grazed by Maori wrasse, another onto mini-walls where reef sharks patrol the blue edge, another onto shallow gardens ideal for first-timers off the pontoon boats. Conditions decide the day's picks, which keeps repeat visits fresh. It is the easiest way to sample ribbon-quality water without committing to a liveaboard bunk.
The moment you come for: Shelf-edge clarity on a day trip, Maori wrasse, varied moorings from walls to gardens
Topography: A chain of small shelf-edge reefs with walls, bommies, and sandy amphitheaters
Current: Outer-shelf position brings clean water and occasional gentle drift along the reef edges.
Entry: Served by fast catamarans and dive boats out of Port Douglas; individual moorings are chosen on the day for wind and tide.
Know before you splash
Hazards: Busy pontoon and boat traffic on popular moorings; watch for props and snorkelers on ascent.
Who you'll meet
Clownfish & Anemonefish
Green Sea Turtle
Napoleon (Humphead) Wrasse
Whitetip Reef Shark
For photographers
Wide angle: ★★★★☆ · Macro: ★★★☆☆ — editors' 1–5 rating of what this site gives each style of shooting