Sea caves of Niue
Dome Cave (Alofi Bay)
- Max depth30 m
- CertificationCavern
- Water temperature≈ 20–28 °C, varies with the seasonestimated, no reports yet
Diving and fills
Dive here with
The dive
You cross a rubble patch to the entrance and swim through a short dark tunnel into a chamber inside the island, where up to six divers can surface at once.
Profile and sections
You cross a rubble patch to the entrance and swim through a short dark tunnel into a chamber inside the island, where up to six divers can surface at once. Thousands of ancient stalactites, stalagmites and fluted columns fill it, light plays through the water and the halocline, where fresh and salt water meet, and uga (coconut crabs) sometimes rest on the walls. Dozens of katuali, the flat-tailed sea snake found only on Niue, swim in and out with you.
On the way back you see a blue glow with the silhouettes of fish. Outside, large table corals line the reef edge before a steep drop-off.
Practical: Niue Blue is the only dive operator the sources name; book ahead.
- Depth and profile
- Count on 30 m: the Niue Pocket Guide calls it a 30 m dive in and under the island. According to PADI the mooring sits over 10–12 m of rubble and the cave is about 25 m long. You surface in the chamber; the only way out is ~8 m back down to the cave's base.
- Configuration
- A short dark tunnel to a chamber with an air dome: recreational gear with a torch and a backup light (estimate).
Who can dive where
- At least Cavern
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Goes down to 30 m (trimix or deco may be needed)
This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.
How to get there
A boat ride of about 15 minutes to a mooring at the top of Alofi Bay, only with the local dive operator. Bring a torch.
Around Dome Cave (Alofi Bay)
FillsNo fill station known nearby
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