underwaterkingdoms.com · Operator
North Ridge-specific terrain, coral, current, and wildlife.
Koh Bon, North Ridge
Exposed ridge dive on Koh Bon.
Scuba DivingBoatIntermediate5m - 35m
Reef
Boat-only Koh Bon ridge dive with a sloping reef, stronger current sensitivity, and a route best handled with a guide.
About Koh Bon, North Ridge
Koh Bon, North Ridge is the exposed north-side ridge on Koh Bon, with a sloping reef that rolls into open water and a route that can link toward the wider Koh Bon complex when conditions allow. It is the more current-sensitive side of the island, valued for its coral color, rock crevices, and the chance of big-fish encounters on a guided reef dive. Plan it as a boat-led ridge dive rather than a relaxed bay swim.
Safety & Access
Site Conditions
Strong currentSurge
Safety Notes
Stay close to the guide, watch the return leg to the reef, and do not assume the north ridge will feel as calm as the sheltered bay.
Access Restrictions
Boat access only inside Mu Ko Similan National Park, with seasonal park opening dates controlling when the site can be dived.
Legal Notes
Mu Ko Similan National Park is closed annually from 16 May to 14 October.
Where Is Koh Bon, North Ridge?
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Local Intel For Koh Bon, North Ridge
Community notes to help plan your visit.
Scuba Diving
Shallow reef dive with a swim route from the North Ridge over the West Ridge into the bay.
Freediving
Not a freedive-first site. The ridge drops away quickly and the current-sensitive profile is better suited to scuba with a guide.
Snorkeling
Not a strong snorkel target. The exposed ridge is better left to scuba, while the sheltered Koh Bon bay is the calmer option.
Wildlife at Koh Bon, North Ridge
Species commonly reported at this site, with direct links into their wildlife guides.
Research Estimate At Koh Bon, North Ridge
Conservative baseline from public research. No community dives logged yet.
Avg. Visibility20m
Access3/5 · Moderate entry effort
Coral2/5 · Some damage
Aquatic Life4/5 · Great variety
Facilities2/5 · Limited facilities
Crowd / PopularityQuite busy
CurrentModerate current
SurgeModerate surge
