Spend a full day exploring Mu Ko Ang Thong’s limestone islands—snorkel reefs, paddle sea kayaks through cliffs and visit the emerald saltwater lagoon on Ko Mae Ko. This guide explains what to expect and how to prepare for the 8–9 hour marine-park outing from Koh Samui.
More ways to explore the area's outdoor wonders
You step off the boat and the sea rearranges itself—limestone cliffs lean in like curious neighbors and turquoise water pulls at your ankles. The day unfolds across jagged islets and calm lagoons as the vessel threads between rock spires, dropping you off at white sand and a saltwater lake known locally as the Emerald Lagoon on Ko Mae Ko.
Difficulty
moderate
Duration
8–9 hours
Fitness Level
Light to moderate fitness for short hikes, stair climbs and paddling; able-bodied travelers can join.
Wildlife
History
Mu Ko Ang Thong was declared a national marine park in 1980 to protect its limestone islands, reefs and coastal ecosystems.
Conservation
The park enforces protected zones and seasonal closures; visitors should use reef‑safe products, avoid touching coral and take all trash back to the mainland.
Reserve your spot on the Ko Samui Angthong Marine Park Full Day Tour with Snorkeling & Sea Kayaking today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring reef‑safe sunscreen
Use biodegradable, reef‑safe sunscreen and apply before boarding to protect coral and fish habitat.
Pack a small dry bag
Keep phones, cameras, and a spare shirt dry during kayaking and beach stops.
Take seasickness precautions
If you’re prone to motion sickness, take medication an hour before departure—open-deck boats and choppy crossings can trigger symptoms.
Wear water shoes
Rocky shorelines and wooden stairs to viewpoints are slippery; closed-toe water shoes improve traction and protect feet.
Dry bag (10–20L)
Keeps valuables and spare clothes dry during kayak segments and beach stops.
Reef‑safe sunscreen
Protects skin and coral—many parks enforce reef-safe products.
summer
Water shoes
Provide grip on slippery rocks and protect feet in shallow reefs.
Light windbreaker or UV shirt
Thin coverage for sun and breezy crossings; dries quickly after splashes.
spring