Spend a full day exploring Angthong National Marine Park by boat: snorkel coral gardens, paddle sea kayaks along limestone cliffs, and hike to the famous Emerald Lake viewpoint. This practical guide outlines what to expect and how to prepare for the 42-island experience.
More ways to explore the area's outdoor wonders
You step from the boat onto a bright, wind-scoured beach and the archipelago opens around you—jagged limestone islands cutting the horizon, the sea pushing and polishing every edge.
Difficulty
moderate
Duration
9 hours
Fitness Level
Moderate fitness; able to board small boats, paddle a kayak for short distances, and climb uneven stone steps for viewpoints.
Wildlife
History
Angthong was designated a national marine park to protect its marine and island habitats and to manage tourism; local fishing communities on Koh Samui historically navigated these channels.
Conservation
Visitor impact is managed through park fees, designated trails and no-touch rules for coral; use reef-safe products and follow guides’ instructions to minimize disturbance.
Reserve your spot on the Full-Day 42 Islands Angthong National Marine Park Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring biodegradable sunscreen
Reef-safe sunscreen protects coral while keeping you comfortable during long sun exposure on deck and beaches.
Wear sturdy water shoes
Beaches can be rocky and the hike to viewpoints uses loose, steep steps—grippy footwear helps.
Pack a light dry bag
Protect cameras, phones and snacks from splashes during kayaking and boat transfers.
Take motion-sickness meds early
Rougher Gulf waters and multiple boat transfers make pre-emptive medication worthwhile if you get seasick.
Reef-safe sunscreen
Protects skin and local coral ecosystems during prolonged sun exposure.
summer
Water shoes
Provide traction on rocky beaches and during short island hikes.
Light dry bag (10L–20L)
Keeps valuables and spare clothes dry while kayaking or on deck.
Personal snorkel mask (optional)
A well-fitting mask improves comfort and visibility while snorkeling.
summer