Spend less time sailing and Make the most of your time in the Angthong National Marine Park on a day trip from Koh Samui. Navigate between the archipelago’s 42 islands, Once you arrive in the area come ashore to explore limestone caves, karst cliffs, and rock formations that rise from sheltered lagoons. Slip into the clear water to snorkel above radiant coral and shimmering fish, Pause for a traditional Thai lunch on Phaluay Island, and idle away the afternoon in the soft sand of a perfect beach, this tour minimizes transit time by transporting you to the protected reserve by speedboat, which gives you more time to swim, and snorkel.