Independent coral-richness write-up that mentions Back Door's reef context.
Boat-dived reef on the north side of M'pai Bay.
Boat-dived reef on the north side of M'pai Bay.
Boat access, mooring-buoy entry, and local site management make operator support the normal setup.
Back Door is a compact boat-dived reef on the north side of M'pai Bay, built around a mooring-line descent, a sandy start, and a reef corner that stays interesting without becoming deep. The site mixes a big gorgonian, schooling fish, and pufferfish around the concrete block with denser coral on the surrounding reef, so it works well as a relaxed macro-and-reef dive. Expect a shallow profile, little to slight current, and a route that rewards easy pacing and clean buoyancy.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
5m - 14m
Depth Note
Shallow boat dive with a sandy start, a mooring-line descent, and a compact reef profile to the 14m range.
Typical Conditions
Shallow boat dive with a sandy start, a reef corner, and no to slight current.
Hazards, restrictions, and access requirements.
Safety Notes
Use the descent line for a controlled entry and keep a steady hover over the sand and coral.
Access Restrictions
Plan the dive around the mooring buoy and descent line rather than a free entry from shore.
Legal Notes
The dive is managed through the local boat-and-mooring setup on the north side of M'pai Bay.
Community notes to help plan your visit.
Scuba Diving
Easy boat dive with a line descent, a compact reef profile, and a reported max depth around 14m.
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
Independent coral-richness write-up that mentions Back Door's reef context.
Boat ride to mooring buoy, line descent, shallow profile, and little to no current.
Know this site? Improve Spot Details.

Fringing reef with an overhang and small wreck.

Sheltered beach-entry reef for relaxed training dives.

Mooring-buoy reef with fishy current breaks.

Shallow Cambodia coral reef with pipefish and stingrays.

Shallow boulder-and-cave dive with night-dive action.

Macro-rich reef with large coral-covered rocks.