Discover the Emerald Lagoon in Ang Thong Marine Park near Koh Samui
The Emerald Lagoon in Ang Thong Marine Park near Koh Samui is a breathtaking hidden lake surrounded by limestone cliffs. Accessible only by boat, the lagoon offers stunning views, snorkeling, and kayaking in a protected marine environment.
Key Points
- 1The Emerald Lagoon (Talay Nai) is a hidden lake surrounded by limestone cliffs in Ang Thong Marine Park, an archipelago of 42 islands.
- 2Access is only by boat; tours usually include transfers, lunch, kayaking, and snorkeling.
- 3Swimming inside the lagoon is prohibited to protect its ecosystem, but other park areas offer great snorkeling and kayaking.
- 4Best visiting months are November to April for calm seas and clear underwater visibility.
The Emerald Lagoon, nestled within the limestone cliffs of Ang Thong National Marine Park, is one of the most stunning natural attractions in Thailand. Located in an archipelago of 42 islands near Koh Samui and Koh Phangan, the lagoon was formed millions of years ago by the collapse of limestone rock, creating a hidden lake with vivid green seawater.
Access to the lagoon is exclusively by boat, with most tours offering transfers, lunch, kayaking, and snorkeling activities. Upon arrival, visitors climb a short stairway through tropical forest to a viewpoint that reveals the lagoon's spectacular scenery. Swimming inside the lagoon itself is prohibited to protect its delicate ecosystem, but nearby spots in the park offer excellent opportunities for snorkeling and kayaking among coral reefs and tropical fish.
The best time to visit is from November to April when the sea is calm and underwater visibility is at its peak. Whether you are staying on Koh Samui or Koh Phangan, a day trip to Ang Thong Marine Park and the Emerald Lagoon promises an unforgettable experience of Thailand’s natural beauty.
