Spend a long, vivid day by speedboat exploring the Similan Islands’ top snorkel sites. This eco-aware day trip from Phuket combines multiple reef swims, a nature trail on Koh Miang and the Sail Rock viewpoint on Koh Similan.
More ways to explore the area's outdoor wonders
The day begins before sunrise on the Khao Lak shoreline: guides from SeaStar Andaman check masks and life jackets while a ribbon of light slides over the Andaman Sea. Within an hour on a first-class speedboat the islands draw near, rock faces rising from blue water like bookends to a thriving underwater world. Currents here push and pull, nudging you along reefs thick with staghorn, brain coral and schools of parrotfish.
Difficulty
moderate
Duration
10–11 hours
Fitness Level
Suitable for most fitness levels but requires basic swimming ability and the stamina for multiple snorkel sessions and stairs at viewpoints.
Wildlife
History
The Similan Islands were designated a national park in 1982 to protect coral reefs and marine life; the islands’ granite formations are geologically older than many surrounding sediments.
Conservation
Operators follow Green Fins and Marine Department regulations; visitors are asked to avoid touching corals, use reef-safe sunscreen and dispose of waste responsibly.
Reserve your spot on the Similan Islands Snorkel Tour by SeaStar Andaman from Phuket today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Book in-season (Oct–May)
The Similan National Park is closed during monsoon months; schedule between 15 Oct and 15 May for reliable operations and calmer seas.
Bring reef-safe sunscreen
Only use biodegradable, reef-safe sunscreen to protect corals and follow guide instructions to avoid physical contact with reefs.
Wear snug snorkel gear
A well-fitting mask and fins improve visibility and reduce fatigue during multiple snorkel stops; staff supply gear but bring your own if possible.
Prepare for a long day
This is a 10-hour excursion with early pickup—pack snacks, motion-sickness meds if needed, and a waterproof bag for valuables.
Snorkel mask and fins
Improves comfort and maneuverability during repeated reef swims; rentals available but fit matters.
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Reef-safe sunscreen
Protects skin from tropical sun while keeping coral-safe ingredients in the water.
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Waterproof dry bag
Keeps phone, passport copy and a light layer dry on deck during transit.
Light long-sleeve UV shirt
Sun protection when not in the water—quick-dry material helps on windy boat rides.
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