A short, focused snorkeling trip from Ko Samet to Koh Thalu that pairs shallow reef swims with a dramatic arch rock and a quick hilltop viewpoint. Ideal for travelers looking for accessible marine life, clear water, and a relaxed beach stop within a three-hour window.
More ways to explore the area's outdoor wonders
You step off the speedboat into warm spray and the arch of Koh Thalu rises like a carved doorway against the sky—sea glass water laps at its base, and a band of coral outlines the shallows.
Difficulty
moderate
Duration
3 hours
Fitness Level
Moderate—comfortable swimming ability and the stamina for short periods in the water plus a 10–20 minute uphill bushwalk.
Wildlife
History
The island’s arch formed through long-term wave erosion; local fishing communities in Rayong have used nearby waters for generations.
Conservation
Reefs near Koh Thalu are vulnerable to bleaching and physical damage—use reef‑safe products, avoid touching coral, and follow local park guidelines to minimize impact.
Reserve your spot on the Thalu Island Snorkeling Trip from Ko Samet today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring reef‑safe sunscreen
Use mineral-based sunscreen to protect coral and reduce skin irritation; reapply after swimming.
Wear water shoes
Rocky shorelines and coral shards make water shoes helpful for beach entry and the short bushwalk to the viewpoint.
Rent or fit your own mask
Masks are often provided but a well-fitting personal mask reduces fog and leakage for better snorkeling.
Listen to the guide on currents
Currents can shift quickly; keep your life vest on during boat transfers and follow guide positioning in the water.
Mask and snorkel
A well-fitting mask ensures clear views; snorkels make surface time more comfortable (equipment sometimes supplied).
Reef‑safe sunscreen
Protects skin while minimizing damage to sensitive coral ecosystems.
summer
Water shoes
Protects feet on rocky beaches and during the island approach.
Dry bag or small waterproof case
Keeps phone, cash and a light towel dry on the boat and shore.