Board the MV KOON1 for a compact liveaboard that puts you on top snorkeling sites of the Similan archipelago in 48 hours. Expect bright coral gardens, white sand bays, an overnight on the boat, and practical tips for calm, safe snorkeling.
Board the MV KOON1 for a compact liveaboard that puts you on top snorkeling sites of the Similan archipelago in 48 hours. Expect bright coral gardens, white sand bays, an overnight on the boat, and practical tips for calm, safe snorkeling.
A breeze off the Andaman carries salt and the hollow clack of the MV KOON1 as it eases away from Khao Lak at first light. Within an hour the shoreline slides into a curve of blue and the Similan Islands—rocky granite isles rising from deep water—appear like scattered giants, their cliffs and white beaches edged with reef.
Verified experiences and guided adventures in the surrounding area.
Operated by Oh-Hoo · Khao Lak, Phang Nga
A breeze off the Andaman carries salt and the hollow clack of the MV KOON1 as it eases away from Khao Lak at first light. Within an hour the shoreline slides into a curve of blue and the Similan Islands—rocky granite isles rising from deep water—appear like scattered giants, their cliffs and white beaches edged with reef.
The Similans are part of Mu Ko Similan National Park, protected since the early 1980s to conserve exceptional coral gardens and seasonal migrations. Geologically the islands are granite outcrops smoothed by sea and monsoon; culturally they’re a fisheries landscape historically used by Malay and southern-Thai communities. You’ll snorkel at Islands 5 and 6 first—shallow coral slopes alive with parrotfish and anemonefish—then rest on Princess Bay (Island 4), a roughly 400‑meter sweep of powder sand. Later, Koh Payu (Island 7) and Christmas Point deliver dense coral gardens and deeper channels that attract reef sharks and hawksbill turtles. On Island 8 you can climb to the famous “Sail Rock” viewpoint for a panoramic finish.
Practical guidance: bring a fitted mask or use the supplied set, apply reef‑safe sunscreen, and time the trip for November–April when seas are calm and the park is open (the park closes May 16–Oct 14 annually). Expect two days afloat with guided snorkel sessions, hotel transfers from Khao Lak, all meals on board, and basic cabins aboard MV KOON1. Hydrate, pack motion‑sickness remedies if you’re sensitive, and respect coral by not touching—your presence is temporary, the reefs are not.
easy.
2 days.
Suitable for travelers in average health who can swim and enter/exit small boats; expect multiple short snorkel sessions and light boat movement.
The park is closed annually from May 16 to October 14 for conservation—trips operate widely from mid‑October through April when conditions are best.
Yes; basic snorkels, masks, and fins are supplied, but many travelers prefer to bring their own well‑fitting mask.
Seas are generally calm November–April; during the monsoon (May–October) conditions are rougher, which is why the park is closed for part of the year.
Children are allowed (child fares apply for ages 4–11); infants typically sit on an adult’s lap and operators may restrict participation for under‑one‑year olds.
Mu Ko Similan was designated a national park in the early 1980s to protect one of Thailand’s most important coral systems and to regulate tourism.
Annual park closures and limited visitor infrastructure help reefs recover from diving pressure; always avoid standing on coral and use mooring points rather than anchors.
Oh-Hoo operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




A breeze off the Andaman carries salt and the hollow clack of the MV KOON1 as it eases away from Khao Lak at first light. Within an hour the shoreline slides into a curve of blue and the Similan Islands—rocky granite isles rising from deep water—appear like scattered giants, their cliffs and white beaches edged with reef.
A breeze off the Andaman carries salt and the hollow clack of the MV KOON1 as it eases away from Khao Lak at first light. Within an hour the shoreline slides into a curve of blue and the Similan Islands—rocky granite isles rising from deep water—appear like scattered giants, their cliffs and white beaches edged with reef.
The Similans are part of Mu Ko Similan National Park, protected since the early 1980s to conserve exceptional coral gardens and seasonal migrations. Geologically the islands are granite outcrops smoothed by sea and monsoon; culturally they’re a fisheries landscape historically used by Malay and southern-Thai communities. You’ll snorkel at Islands 5 and 6 first—shallow coral slopes alive with parrotfish and anemonefish—then rest on Princess Bay (Island 4), a roughly 400‑meter sweep of powder sand. Later, Koh Payu (Island 7) and Christmas Point deliver dense coral gardens and deeper channels that attract reef sharks and hawksbill turtles. On Island 8 you can climb to the famous “Sail Rock” viewpoint for a panoramic finish.
Practical guidance: bring a fitted mask or use the supplied set, apply reef‑safe sunscreen, and time the trip for November–April when seas are calm and the park is open (the park closes May 16–Oct 14 annually). Expect two days afloat with guided snorkel sessions, hotel transfers from Khao Lak, all meals on board, and basic cabins aboard MV KOON1. Hydrate, pack motion‑sickness remedies if you’re sensitive, and respect coral by not touching—your presence is temporary, the reefs are not.