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Dive Spot Guide•
W Arch
Shallow Miyako arch dive with strong photo appeal.
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Boat-access arch dive on Irabu Island; plan for shallow topography, moderate current, and macro life rather than pelagic action.
About W Arch
W Arch is a boat-access arch dive on Irabu Island in Miyako, with a shallow reef-edge profile, a heart-shaped main arch viewed from below, and a smaller arch plus cave pocket behind the reef. It is more about topography, light, and macro life than big-fish hunting, and the best dives are the ones where the team can pace the route slowly and hold a clean position under the openings.
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Where Is W Arch?
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Community sourced coordinates.
W Arch Planning Details
Depth range, seasonality, and planning context.
Reported Depth
18m
Depth Note
The main arch sits on the reef edge at relatively shallow depth and can appear heart-shaped from below.
Best Season
Year-round
Typical Conditions
Shallow reef-edge arches with moderate current and strong light through the openings.
Safety & Access At W Arch
Hazards, restrictions, and access requirements.
Key Hazards
Overhead environment
Safety Notes
Treat it as a cave-style arch dive: hold neutral buoyancy under the roof, avoid crowding the openings, and stay within the team's planned route.
Access Restrictions
Boat access only; the arch and cave pockets are underwater, so it is not a shore-entry site.
Legal Notes
Follow guide briefings on the reef edge because the site is a popular cave-style topography point.
Local Intel For W Arch
Community notes to help plan your visit.
Scuba Diving
Boat dive with a heart-shaped main arch, a smaller arch, and a cave pocket behind the reef; slow pacing rewards the best viewing.
Freediving
Not a freedive-first site because the main feature is an underwater arch system.
Snorkeling
The attraction is below the surface, so casual snorkeling is not the main use case.
W Arch Dive Conditions Planner
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Current Snapshot
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Visibility Outlook
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Exposure Profile at W Arch
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at W Arch
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At W Arch
Community dive logs and visit reports for this site.
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Dive Spot Log Averages At W Arch
Average conditions based on logged dives & visits.
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W Arch Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
W Arch Guide - Sources and Updates
Last Updated
Research Sources
en.marinediving.com · Dive Directory
Marine Diving web page with W Arch depth and macro notes.
okinawa-labo.com · Travel Editorial
Boat-time and beginner-friendly framing.
visitokinawajapan.com · Official Tourism
Official W-Arch listing with depth, current, and beginner framing.
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