A full-day speedboat trip from Khao Lak to the Similan Islands that visits top snorkel sites like Stonehenge and Christmas Point. Expect multiple guided snorkel stops, a beach lunch, and chances to see turtles and dolphins.
More ways to explore the area's outdoor wonders
A morning sea breeze cuts through the boat’s wake as the Andaman stretches toward the jagged silhouettes of the Similan Islands. Onboard, passengers trade city humidity for salt on their lips and a promise of coral gardens below. The captain reads the swell and chooses sites by visibility and wildlife reports; rocks like Stonehenge rise from deep water while white-sand coves invite a slow, easy swim.
Difficulty
easy
Duration
8–9 hours
Fitness Level
Light to moderate; comfortable standing and swimming for short periods and basic snorkeling ability.
Wildlife
History
The Similan Islands were declared a national park in the early 1980s to protect their unique granite islands and coral ecosystems used by local fishing communities for generations.
Conservation
Park regulations limit visitor numbers, require entry permits, and enforce no-touch rules; reef health benefits when visitors use reef-safe products and avoid anchoring on coral.
Reserve your spot on the Similan Islands Snorkeling Tour By Sea Star Andaman From Khao Lak today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring reef-safe sunscreen
Oils from conventional sunscreens damage corals; choose reef-safe SPF and apply at least 15 minutes before entering the water.
Carry ID/passport photocopy
The national park requires passport details for entry permits—bring the original or confirmed instructions from your operator.
Protect against motion sickness
The 60–90 minute speedboat crossings can be choppy; take medication or use acupressure bands if you are prone to seasickness.
Wear water shoes
Beaches have rocks and reef fragments; water shoes protect feet during shore exits and short rock scrambles to viewpoints.
Reef-safe sunscreen
Protects your skin and the coral — apply before boarding.
summer
Lightweight dry bag
Keeps phone, passport photocopy, and spare clothes dry on the boat.
Water shoes
Protects feet on rocky beaches and when entering shallow reefs.
Waterproof camera or housing
Captures underwater life and island viewpoints; useful for low-light reef shots.