A full-day speedboat tour from Koh Samui that combines snorkeling in clear bays, sea-kayaking along rocky shorelines and a short but steep hike to Mae Koh’s Emerald Lagoon viewpoint. Ideal for travelers wanting varied marine adventure in one outing.
More ways to explore the area's outdoor wonders
The day begins at a private pier in Bophut with the engine humming and a salt-slick breeze pushing you away from Koh Samui. Insea Speedboat cuts a silver ribbon across the Gulf and, within an hour, islands rise from the water — sheer limestone cliffs, sheltered coves and a lagoon that seems to change color with every angle of light.
Difficulty
moderate
Duration
6–8 hours
Fitness Level
Suitable for travelers in average fitness — able to swim short distances and manage a 15–30 minute uphill hike in hot conditions.
Wildlife
History
Ang Thong was declared a national marine park in 1980; the islands have long supported small fishing communities and seasonal use by seafaring groups.
Conservation
The park has protected status and regulates anchoring and fishing; visitors are encouraged to use reef‑safe products and avoid touching coral to limit impact.
Reserve your spot on the Day Tour to Angthong Marine Park by Insea Speedboat from Koh Samui today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring reef‑safe sunscreen
Use mineral-based sunscreen and reapply after snorkeling to protect coral and avoid skin irritation in the tropical sun.
Wear grippy water shoes
Expect wet rock landings and a short uphill trail — shoes with traction keep you safe on slippery surfaces.
Pack a lightweight dry bag
Keep phone, camera, and a spare shirt dry between snorkeling and kayaking sessions.
Start hydrated and pace the hike
Drink water before the viewpoint climb; the 15–30 minute ascent is short but steep in heat and humidity.
Reef‑safe sunscreen
Protects skin and the coral ecosystems during prolonged sun exposure and snorkeling.
summer
Snorkel mask (or use provided)
A well‑fitting mask makes snorkeling more enjoyable and keeps water out of your nose.
Water shoes
Protects feet on rocky shorelines and provides traction on wet steps to viewpoints.
Light dry bag
Keeps electronics and spare clothes dry during boat transfers and sea spray.