Spend a day among towering limestone islands, snorkel coral gardens and kayak into hidden bays on a small-group speedboat tour from Koh Samui. This luxury day trip balances active exploration with comfortable transfers and a seaside Thai lunch.
Spend a day among towering limestone islands, snorkel coral gardens and kayak into hidden bays on a small-group speedboat tour from Koh Samui. This luxury day trip balances active exploration with comfortable transfers and a seaside Thai lunch.
You step aboard a low-profile speedboat as Koh Samui recedes: wind pushes the spray back against the sun, limestone cliffs rise like folded pages from the sea and the first islands of Ang Thong appear as green crowns on blue water.
Verified experiences and guided adventures in the surrounding area.
Operated by Happy Samui · Koh Samui, Surat Thani
You step aboard a low-profile speedboat as Koh Samui recedes: wind pushes the spray back against the sun, limestone cliffs rise like folded pages from the sea and the first islands of Ang Thong appear as green crowns on blue water.
Ang Thong National Marine Park protects 42 islands carved from Miocene limestone and capped with evergreen forest. The park was established to preserve reef systems, bays and the famous Talay Nai (Emerald Lagoon) on Koh Mae Ko — a geologic bowl fed through sea caves. Local fishing communities and small island settlements have long harvested these waters, and the area now operates under national park rules to balance tourism and protection.
On a luxury small-group speedboat tour you’ll snorkel over coral gardens at Koh Wao, paddle a sit-on-top kayak into quiet bays, and hike a short, steep trail for the panoramic view above the Emerald Lagoon (swimming inside the lagoon is prohibited). Expect clear water, quick transitions between activities, and a Thai buffet served seaside on Koh Phaluai.
Practical edge: wear reef-safe sunscreen, bring a light wind layer for the crossing, and keep cash for small island purchases. The day is active but manageable for most travelers; brief swims and a moderate cliff-side viewpoint climb are the main exertions. If you want space, choose a small-group option—fewer passengers mean quicker gear changes and quieter anchorages. Leave no trace: coral and marine life are fragile, so follow guides’ briefings and avoid touching reefs.
easy.
7 hours.
Suitable for travelers in average physical condition; includes short swims, basic kayaking and a moderate viewpoint climb.
The tour runs about 7 hours; expect 45–90 minutes at key stops (snorkeling at Koh Wao, kayaking and viewpoint on Koh Mae Ko, lunch and beach time on Koh Phaluai).
Snorkel mask, snorkel and fins are provided; basic swimming ability is recommended but guides stay close to snorkel zones for safety.
No—local regulations prohibit swimming inside the Emerald Lagoon to protect the site and its delicate geology; visitors view it from the rim.
Round-trip hotel transfers are included for most Koh Samui hotels—confirm your pickup point when booking and note cruise-ship passengers are not accepted.
Ang Thong National Marine Park protects 42 islands and was established to conserve the Gulf’s limestone islands and reef systems, shifting the area toward regulated ecotourism.
The park enforces restrictions such as no swimming in the Emerald Lagoon and encourages reef‑safe products; follow guide briefings and avoid touching coral to minimize impact.
Happy Samui operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




You step aboard a low-profile speedboat as Koh Samui recedes: wind pushes the spray back against the sun, limestone cliffs rise like folded pages from the sea and the first islands of Ang Thong appear as green crowns on blue water.
You step aboard a low-profile speedboat as Koh Samui recedes: wind pushes the spray back against the sun, limestone cliffs rise like folded pages from the sea and the first islands of Ang Thong appear as green crowns on blue water.
Ang Thong National Marine Park protects 42 islands carved from Miocene limestone and capped with evergreen forest. The park was established to preserve reef systems, bays and the famous Talay Nai (Emerald Lagoon) on Koh Mae Ko — a geologic bowl fed through sea caves. Local fishing communities and small island settlements have long harvested these waters, and the area now operates under national park rules to balance tourism and protection.
On a luxury small-group speedboat tour you’ll snorkel over coral gardens at Koh Wao, paddle a sit-on-top kayak into quiet bays, and hike a short, steep trail for the panoramic view above the Emerald Lagoon (swimming inside the lagoon is prohibited). Expect clear water, quick transitions between activities, and a Thai buffet served seaside on Koh Phaluai.
Practical edge: wear reef-safe sunscreen, bring a light wind layer for the crossing, and keep cash for small island purchases. The day is active but manageable for most travelers; brief swims and a moderate cliff-side viewpoint climb are the main exertions. If you want space, choose a small-group option—fewer passengers mean quicker gear changes and quieter anchorages. Leave no trace: coral and marine life are fragile, so follow guides’ briefings and avoid touching reefs.