![Scientific name: Dermochelys coriacea Common name Spanish: Tinglar Photo by Claudia Lombard, USFWS Location, Sandy Point National Wildlife Refuge, US Virgin Islands More information: [1]](/_next/image?url=https%3A%2F%2Fscccpsqeuaphhrqmepmb.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fimages-public%2Fclean%2Fcontent%2Fce079739-416f-4696-b477-a5113ebfaec1%2Fmaster.jpg&w=3840&q=75)
similandivecenter.com · Operator
Operator conditions page with visibility, currents, seasonality, and marine-life notes.
Dive Spot Guide•
Similan Islands National Marine Park
Seasonal granite-island marine park with big reef life.
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Boat-based Similan trips mix sheltered bays with exposed boulder sites, so season, weather, and current windows matter.
About Similan Islands National Marine Park
Mu Ko Similan is a granite-island marine park in the Andaman Sea with boulder reefs, coral gardens, swim-throughs, and sheltered bay dives mixed with more exposed outer sites. It is best treated as a seasonal boat-access destination: plan around the open months, settled weather, and current windows to get the clearest water and easiest entries.
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Research Estimate At Similan Islands National Marine Park
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 25m
AccessChallenging entry effort
CoralHealthy coral
Aquatic LifeExceptional variety
FacilitiesBasic facilities
Crowd / PopularityQuite busy
CurrentModerate current
SurgeModerate surge
Where Is Similan Islands National Marine Park?
This spotNearby spots
Community sourced coordinates.
Similan Islands National Marine Park Planning Details
Depth range, seasonality, and planning context.
Reported Depth
5m - 40m
Depth Note
The park spans shallow bay reefs, mid-depth boulder slopes, and deeper exposed sites; the practical working range is roughly 5 to 40 meters depending on island and route.
Best Season
November to April; the park is easiest in the dry season and closes through the monsoon months.
Typical Conditions
Warm Andaman water, clear visibility on settled days, and a mix of sheltered reef bays and exposed current-prone pinnacles.
Safety & Access At Similan Islands National Marine Park
Hazards, restrictions, and access requirements.
Key Hazards
Boat trafficRestricted accessStrong currentSurgeWaves
Safety Notes
Treat exposed sites as current-sensitive open-water dives and schedule them for the calmest weather windows. Use approved operators and follow park entry rules.
Access Restrictions
Access is by boat from the mainland side, usually through liveaboards or organized day trips, with seasonal opening windows and park-entry limits. Overnight stays are not part of the normal visitor pattern.
Legal Notes
Use approved boats only, respect seasonal closures, and follow ranger instructions and entry caps.
Local Intel For Similan Islands National Marine Park
Community notes to help plan your visit.
Scuba Diving
Best for boat divers who are comfortable with changing conditions and current windows; liveaboards are the easiest way to work the island chain.
Freediving
Only very calm, sheltered shallows suit casual freediving here; the park is primarily a scuba and snorkel destination, and exposed sites are too current-prone for relaxed breath-hold plans.
Snorkeling
Sheltered bays and shallower reef tops can work for snorkelers on calm days, but the park is much better known for boat diving than for easy shore snorkeling.
Wildlife at Similan Islands National Marine Park
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Similan Islands National Marine Park
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Similan Islands National Marine Park
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility25m
Activity
No dive activity logged yet.
