Dive-site story
Cathedrals is an outer Great Barrier Reef dive site offshore from Cairns, characterized by massive coral bommies riddled with interconnected caverns and archways. Sunlight beams filter through overhead crevices into the swim-through chambers, illuminating sea fans and glassfish schools. Surrounding sandy patches and reef crests provide varied habitats for grazing turtles, reef sharks, and diverse hard coral formations.
Extensive coral swim-throughs and caverns with distinct overhead light shafts
Large gorgonian sea fans clinging to shaded chamber walls
Resting whitetip reef sharks along the sandy channels between bommies
Healthy hard coral structures spanning staghorn thickets and brain coral heads
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Winter and spring bring the clearest water and lower rainfall, alongside calmer trade wind windows in late spring.
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 | ||||||||||||
| Giant ClamTridacna gigas | Common | ||||||||||||
| Humphead WrasseCheilinus undulatus | Seasonal |
Marine forecast
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