Cut transit time and maximize reef hours: a speedboat day trip to Ang Thong National Marine Park takes you between karst islands for snorkeling, kayaking, and beach time. Ideal for travelers who want a full-day marine experience from Koh Samui.
More ways to explore the area's outdoor wonders
You push off from Samui before the heat builds, the speedboat cutting a bright line across the Gulf as islands materialize out of morning haze. Limestone cliffs loom and the wind threads salt through your hair; water invites you with a clarity that almost dares you not to jump in.
Difficulty
easy
Duration
9 hours
Fitness Level
Suitable for most fitness levels; requires basic swimming ability for snorkeling and light paddling for kayaking.
Wildlife
History
The archipelago has long been used seasonally by Malay and Thai fishers; it gained national park status in 1980 to protect marine and island ecosystems.
Conservation
Visitors are asked to avoid touching coral, use reef-safe sunscreen, and follow no-anchor zones to minimize damage to sensitive habitats.
Reserve your spot on the Explore Angthong National Marine Park's Hidden Gems by Speedboat today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Take motion-sickness meds early
The Gulf can be choppy; take a preventative dose 30–60 minutes before departure if you’re prone to seasickness.
Use reef-safe sunscreen
Apply mineral-based sunscreen before boarding to protect coral and reduce reapplication hassle while snorkeling.
Bring a dry bag and spare clothes
Salt spray and wet gear mean a dry layer for the ride back keeps you comfortable on the transfer.
Listen to the guide for snorkeling safety
Follow briefings on currents, depth and buddy systems—guides know local conditions and safe entry spots.
Reef-safe sunscreen
Protects your skin and the reef during extended sun exposure on deck and in the water.
summer
Light rashguard or neoprene top
Provides sun protection and warmth for longer snorkel sessions.
spring
Dry bag (5–10L)
Keeps phone, wallet and spare clothes dry on a wet speedboat ride.
Water shoes or reef sandals
Protects feet on rocky beach entries and slippery boat ladders.
summer