Agincourt Reefs - Great Barrier Reef
Agincourt Reefs, sitting right on the continental shelf edge, feels like a window into the Coral Sea. We love the sheer energy here, it’s often where the ocean really feels alive. You’re typically diving patch reefs, but they’re packed with Staghorn corals, growing in dense thickets that buzz with tiny Blue Green Chromis. Visibility can swing, 10m on an off day, but we’ve had 30m days where you can see the whole reef structure from the surface. Down below, keep an eye out for Foxface and those massive Orange-socket Surgeonfish cruising the reef top. The main event for us, though, is the sheer density of life in the shallows, especially if you catch it on an incoming tide. You get schools of fusiliers so thick they almost blot out the sun, and the chance of a False Killer Whale passing through isn't as rare as you’d think. This isn't a deep dive, maxing out at 16m, which means plenty of bottom time and lots of light penetration, making the colours really pop. It’s a site that rewards slow, observant diving.
- Location
- Great Barrier Reef, Australia, Australasia
- Coordinates
- -16.031400, 145.842700
- Type
- reef
Best Time to Dive in Great Barrier Reef
The warmest water temperatures in Great Barrier Reef occur in February, averaging 29.5°C. The coolest conditions are in August at 25.0°C.
Monthly Water Temperatures
- January: 29.4°C
- February: 29.5°C
- March: 29.2°C
- April: 28.4°C
- May: 26.9°C
- June: 25.8°C
- July: 25.1°C
- August: 25.0°C
- September: 25.4°C
- October: 26.6°C
- November: 27.7°C
- December: 29.0°C
Nearby Dive Sites in Great Barrier Reef
- Admiralty Anchorage (reef)
- Agincourt Reef - 5-25m (reef)
- Agincourt Reef No. 1 - Trigger Fish City (reef)
- Agincourt Reef No. 4 - The Point - 5-25m (reef)
- Agincourt Reefs (reef)
- Alexandra Reefs (reef)
- Atkinson Reef (reef)
- Aylen Patch (reef)
- Baines Patches (reef)
- Baines Patches (reef)
- Barracuda Pass (drift)
- Bashful Bommie (reef)
- Bashful Bommie (reef)
- Batt Reef (reef)
- Big Buoy
Nearest Dive Centres to Agincourt Reefs
- ABC Dive & Snorkel - ["PADI"]
- Blue-Cruise Pty.Ltd
- Coral Princess Cruises P/L - ["PADI"]
- Dive Centre
- Divers Den - PADI
- Horseshoe
Marine Life in Great Barrier Reef
Home to 163 recorded species including 88 reef fish, 61 hard corals, 9 seagrass & algae, 2 sharks & rays, 1 starfish, 1 sea snails & nudibranchs.
Notable Species
- thalassia (Thalassia hemprichii) - Seagrass & Algae
- halodule (Halodule uninervis) - Seagrass & Algae
- cymodocea (Cymodocea rotundata) - Seagrass & Algae
- Great hammerhead (Sphyrna mokarran) - Sharks & Rays
- Bullethead Parrotfish (Chlorurus sordidus) - Reef Fish
- seagrass (Halophila ovalis) - Seagrass & Algae
- Cauliflower coral (Pocillopora damicornis) - Hard Corals
- Lineated Butterflyfish (Chaetodon trifasciatus) - Reef Fish
- Dusky Parrotfish (Scarus niger) - Reef Fish
- Blackspot Surgeonfish (Acanthurus nigrofuscus) - Reef Fish
- Bird wrasse (Gomphosus varius) - Reef Fish
- Blue-lined Tang (Zebrasoma scopas) - Reef Fish
- Telescopefish (Epibulus insidiator) - Reef Fish
- Banded thicklip (Hemigymnus fasciatus) - Reef Fish
- Fluorescence grass coral (Galaxea fascicularis) - Hard Corals
- Blunt-head Parrotfish (Chlorurus microrhinos) - Reef Fish
- Staghorn coral (Acropora hyacinthus) - Hard Corals
- Chameleon Parrotfish (Scarus chameleon) - Reef Fish
- Citron Butterfly (Chaetodon citrinellus) - Reef Fish
- Black-back Butterflyfish (Chaetodon melannotus) - Reef Fish
Recommended Packing List for Agincourt Reefs
Based on average water temperature of 27.3°C, currents 17 cm/s.
- Shorty or Rashguard - warm 27°C water needs minimal exposure protection
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories