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Astrolabe Reef

Astrolabe Reef is one of those places that sticks with you, even if it’s for reasons you didn't quite expect. Forget the flashy colours of the tropics; here, it’s about the sheer scale and the raw energy of the ocean. We love it because it feels like proper diving – exposed, alive, and full of big surprises. You’ll drop onto kelp-fringed slopes that give way to deeper ledges. Keep your eyes peeled for yellow-eye mullet schooling in the current and the occasional, enormous short-tail stingray gliding by – they’re incredible to watch. We’ve had memorable encounters here with smooth hammerheads cruising through the blue, and the smaller, more elusive ribbonfish tucked into crevices. It’s not a beginners' spot; the currents can pick up, so we’d suggest it for experienced divers comfortable in open water. Our favourite tip? Go early in the morning for the best chance of spotting pelagics before the boat traffic gets going.