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Dive Spot Guide•
Nakanoshima Channel
Nakanoshima Channel is a calm Shimoji Island topography dive.
A boat-accessed Shimoji Island channel dive for relaxed exploration, careful buoyancy, and reef-edge macro hunting in generally calm bay conditions.
About Nakanoshima Channel
Nakanoshima Channel is a Shimoji Island topography dive in the Miyako area, where a shallow coral reef opens into channel cuts, crevasses, and arch-like passages. It suits relaxed, scenic dives when conditions are calm, with slow exploration and macro hunting on the reef edges. The overhead sections still reward good buoyancy and a careful pace.
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Where Is Nakanoshima Channel?
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Community sourced coordinates.
Nakanoshima Channel Planning Details
Depth range, seasonality, and planning context.
Reported Depth
5m - 25m
Depth Note
Published descriptions cluster around roughly 5-25 m, with a few pages listing 22 m instead of 25 m.
Best Season
Autumn to spring, especially on north-wind days when Shimoji-side sites are easier.
Typical Conditions
Usually calm in the bay, with good light on clear days and a slow pace that suits careful buoyancy and photography.
Safety & Access At Nakanoshima Channel
Site conditions, restrictions, and access requirements.
Site Conditions
Overhead environment
Safety Notes
The site includes arches and tunnel-like areas; use appropriate training, buoyancy control, and lighting when entering overhead sections.
Access Restrictions
Best approached with a local operator; wind direction and sea state can change whether the bay-side route is practical, and shore entry is only occasional.
Legal Notes
Follow local guide instructions and no-touch etiquette around the reef and overhead sections. Use the site within local marine-use rules and your training limits.
Local Intel For Nakanoshima Channel
Community notes to help plan your visit.
Scuba Diving
A 5–25 m depth range and typically calm currents make it suitable for most scuba divers, with interesting terrain for exploration.
Freediving
Experienced freedivers can use the shallow, sheltered edges, but the channel cuts and arches are better suited to scuba.
Snorkeling
Snorkeling is possible in the sheltered shallows, but the site's standout features sit below the surface.
Wildlife at Nakanoshima Channel
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Nakanoshima Channel
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Nakanoshima Channel
Average conditions based on logged dives & visits.
No community dive data has been logged here yet. Be the first to record a dive and seed the averages.
