Shows Ao Nui with average 15 m visibility, a maximum around 21 m, and a shallow eastern face suitable for snorkelling.
Ao Nui is a sheltered Phi Phi reef with a mini wall.
Ao Nui is a sheltered Phi Phi reef with a mini wall.
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The site is commonly visited by local operators and Krabi dive centers rather than used as a DIY shore entry.
Ao Nui is a sheltered reef-and-wall dive on the northwest side of Koh Phi Phi Don. The site circles a rocky outcrop just outside the bay, with a reef slope, a small wall, and easy snorkeling on the shallow face. It is a comfortable boat dive for divers who want clear water, mild current, and plenty of coral and reef fish without the feel of a hard-current site.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
1m - 25m
Depth Note
Guide pages describe a reef slope with a shallow snorkel face and a small wall; published maximum depths range from roughly 21 to 25 m.
Best Season
Year-round; calmer sea days are best.
Typical Conditions
Sheltered bay, mild currents, clear water, and a reef slope with a small wall.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Keep an eye on boats near the bay and watch your fins around coral heads and rocky swimthroughs.
Access Restrictions
Boat access only; marine park fee applies.
Legal Notes
Phi Phi Islands is a marine national park, so trips must follow park rules and entry fees.
Community notes to help plan your visit.
Scuba Diving
Easy boat dive with a reef slope, rocky floor, and mini wall that works across a wide range of experience levels.
Freediving
Freediving can work on the shallow face on calm days, but the site is primarily used as a gentle reef dive.
Snorkeling
One of the more snorkel-friendly Phi Phi sites when the bay is calm and the reef is visible from the surface.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Shows Ao Nui with average 15 m visibility, a maximum around 21 m, and a shallow eastern face suitable for snorkelling.
Describes Ao Nui as a bay sheltered by giant rocks and gives a 15-20 m visibility range.
Mentions the two large rocks in front of the bay and highlights nudibranchs, seahorses, and ghost pipefish.
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