Dive-site story
Positioned along the outer Great Barrier Reef offshore from Cairns, Thetford Reef features isolated coral bommies, shallow lagoons, and deep spur-and-groove formations. Scattered swim-throughs and crevices cut across the coral heads, offering shelter to resting reef sharks and macro life. Dive tenders typically anchor in the protected sandy amphitheaters between large coral towers, making navigation straightforward around the main bommie structures.
Network of coral towers and narrow swim-through crevices
Frequent encounters with resting whitetip reef sharks along sandy channels
Abundant giant clams displaying vivid iridescent mantles
Pristine hard coral gardens covering the tops of the bommies
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Winter and spring bring lower rainfall, reduced humidity, and clearer water offshore.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Whitetip reef sharkTriaenodon obesus | Common | ||||||||||||
| Green sea turtleChelonia mydas | Common | ||||||||||||
| Humphead wrasseCheilinus undulatus | Common | ||||||||||||
| Giant clamTridacna gigas | Common | ||||||||||||
| Coral troutPlectropomus leopardus | Common |
Marine forecast
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