Explore Angthong National Marine Park, a breathtaking paradise of over 40 limestone islands in the Gulf of Thailand, on a full-day Koh Samui island tour by comfortable big boat. Cruise across turquoise waters and admire dramatic cliffs, hidden coves, and pristine beaches. Visit the iconic Emerald Lake (Talay Nai) on Mae Koh Island, a stunning saltwater lagoon surrounded by towering peaks, and hike to panoramic viewpoints on Wua Talap Island for spectacular archipelago views. Swim and snorkel in crystal-clear waters, kayak along scenic coastlines, and relax on white-sand beaches. Enjoy a Thai buffet lunch on board with hotel transfers included. Perfect for families, couples, solo travelers, and groups—book your Angthong Marine Park adventure today.