The dive
On the outer edge, the wall has gutters and caves over a rubble bottom. Schooling fish are the big draw: red bass can be so dense that little light reaches the bottom. Grey reef whalers and lemon sharks work the current.
On the inner reef, striped and oriental sweetlips hide in the clefts and caves. Look closely at the soft corals for pipefish, some of them rare. You’ll also see Moorish idols, clownfish, and large titan and redtooth triggerfish.
Conditions and tips
- Dive type: usually a static dive. Weather permitting, it can be a drift from the outer edge into the inner reef.
- Visibility: up to 30 metres on an incoming tide.
- Triggerfish: in the titan triggerfish breeding season you may need to be wary of them.
How to dive it
You dive Agincourt Reef on a day trip from Port Douglas. Certified divers get up to three guided dives at three different sites, with a full briefing before each one. Sites are chosen on the day to suit the weather and tides, so we can’t promise a particular site.
Dive it with us
Port Douglas boat dives
Agincourt’s outer-reef bommies: walls, sharks and the big pelagics.
See the tripWhere it is
What you might see
- AnemonefishThe clownfish of the reef, living in a sea anemone that would sting anything else. Nearly every site has a family.
- SweetlipsStriped, spotted and thick-lipped, hanging in patient schools under the overhangs by day.
- Titan triggerfishThe biggest triggerfish on the reef, and the one with a reputation: give a nesting female a wide berth.
Nearby sites
- Reef dive · Agincourt Reef Barracuda BommieA deep-water pinnacle on the sheltered side of a small ribbon reef at Agincourt Reef 2, right on the outer edge of the Great Barrier Reef. It’s one of the most popular sites on the Agincourt trips.22 m
- Reef dive · Agincourt Reef Gary’s GutA wall on the outer edge of Agincourt Reef 4 that plunges from 5 metres to 40 metres. It averages about 20 metres, so it suits Open Water divers, and it’s a favourite with repeat divers.40 m
- Reef dive · Agincourt Reef Harry’s BommieA garden reef among the pinnacles and patch reefs west of Agincourt Reef 4. It’s a favourite with dive instructors.16 m
- Reef dive · Agincourt Reef Horse ShoeA patch reef between Agincourt Reefs 2 and 3, in an area of strong tidal movement. You can drift it or dive it from the mooring.20 m
