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Granite-boulder site page with shark and reef-fish context.
Dive Spot Guide•
Shark Fin Reef
Boat-access granite reef in the Similan Islands.
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Local operator required
The site is a boat dive in the Similan Islands and is normally handled through local operators or liveaboards.
Plan for boulder fields, swim-throughs, and stronger current than a calm house reef.
About Shark Fin Reef
Shark Fin Reef is a boat-access Similan site built around massive granite boulders, steep drop-offs, and narrow swim-throughs that open into deeper water. It is the kind of dive where structure matters as much as marine life, with coral growth and shark sightings around the rock maze. Conditions are best in the main Similan season, but the site can carry current and feels more serious than a relaxed reef despite the roomy boulder shapes.
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Research Estimate At Shark Fin Reef
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 25m
AccessModerate entry effort
CoralPristine, vibrant coral
Aquatic LifeExceptional variety
FacilitiesBasic facilities
Crowd / PopularityFew visitors
CurrentStrong current
SurgeLight surge
Where Is Shark Fin Reef?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Shark Fin Reef Planning Details
Depth range, seasonality, and planning context.
Reported Depth
5m - 30m
Depth Note
Granite boulders start shallow and slope to a deeper wall-and-bottom profile.
Best Season
October 15 to May 15
Typical Conditions
Visibility is commonly 15-30 m, water is warm in the high 20s C, and the site sits in the main Similan operating season.
Safety & Access At Shark Fin Reef
Hazards, restrictions, and access requirements.
Key Hazards
Strong current
Safety Notes
Current can build around the boulders, so plan conservatively and keep buoyancy steady through the swim-through sections.
Local Intel For Shark Fin Reef
Community notes to help plan your visit.
Scuba Diving
Expect granite boulders, swim-throughs, and a steeply structured reef that rewards controlled buoyancy and good trim.
Wildlife at Shark Fin Reef
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Shark Fin Reef
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Shark Fin Reef
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility25m
Activity
No dive activity logged yet.
