dallinghoo.com · Operator Itinerary
Mergui itinerary mentioning The Arch of Stewart Island.
Dive Spot Guide•
the arch
Remote arch-and-cavern dive in Myanmar's Mergui Archipelago
Local operator required
The Arch is typically folded into a Mergui liveaboard or charter itinerary.
Boat-only liveaboard stop with rocky swim-throughs, soft coral, and dense fish life; best in the dry-season window.
About the arch
The Arch is a remote rock-and-reef dive in Myanmar's Mergui Archipelago, centered on an archway, caverns, and steep rocky walls. It is usually dived from a boat or liveaboard, and the best profile rewards controlled buoyancy through swim-throughs and overhangs. Expect soft coral color, dense reef fish, and a mix of macro subjects with occasional larger fish in season.
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Research Estimate At the arch
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 30m
AccessModerate entry effort
CoralHealthy coral
Aquatic LifeGreat variety
FacilitiesNo facilities
Crowd / PopularityVery quiet
Where Is the arch?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
the arch Planning Details
Depth range, seasonality, and planning context.
Reported Depth
5m - 30m
Depth Note
The main working range is described as roughly 5 to 30 m.
Best Season
November to April
Typical Conditions
Best in the dry season, when seas are calmer and water is clearer.
Safety & Access At the arch
Site conditions, restrictions, and access requirements.
Site Conditions
Strong currentOverhead environment
Safety Notes
Currents can be unpredictable; suitable for experienced divers and added care is needed around swim-throughs.
Access Restrictions
No shore entry.
Local Intel For the arch
Community notes to help plan your visit.
Scuba Diving
Boat-based arch and cavern dive with swim-throughs, rocky walls, and enough structure to reward precise buoyancy.
Freediving
Better suited to scuba than freediving because the main features sit on a rocky profile with overhead sections.
Snorkeling
Snorkeling is limited; the main features sit underwater on the arch and walls.
Wildlife at the arch
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At the arch
Community dive logs and visit reports for this site.
Dive Spot Log Averages At the arch
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility30m
Activity
No dive activity logged yet.
