Spend a day snorkeling the best shallow reefs of Koh Tao and Koh Nangyuan, from the famous sand bridge viewpoint to sheltered coral gardens. This practical guide explains the route, what to expect in the water and how to ready yourself for a full day at sea.
More ways to explore the area's outdoor wonders
The boat eases away from Mae Haad pier as a hot, tropical wind pushes against the canopy and the sea opens into a clean, blue expanse. Onboard, a small Thai-style leisure vessel hums toward Koh Nangyuan—the three islets tied together by a white sand bridge—while the sun outlines distant coral bommies.
Difficulty
easy
Duration
6–7 hours
Fitness Level
Suitable for most fitness levels; basic swimming ability and comfort in open water recommended
Wildlife
History
Koh Tao’s name reflects its turtle-shaped history as a fishing outpost; Koh Nangyuan formed its sand bridge from shifting currents and coral sediment over recent decades.
Conservation
Coral reefs here are fragile—use reef-safe sunscreen, avoid touching or standing on coral, and follow guides’ instructions to minimize impact.
Reserve your spot on the Snorkel Trip to Koh Nangyuan and Bays of Koh Tao By The Oxygen today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring a snug mask
Even though gear is provided, a personal mask that seals well prevents leaks and fogging during multiple swims.
Use reef-safe sunscreen
Apply mineral-based sunscreen before boarding and reapply sparingly to protect coral and marine life.
Watch the currents
Some snorkeling points have stronger currents; stay with the guide and use a life jacket if you’re not a confident swimmer.
Protect your electronics
Use a small dry bag for phones, cameras, and documents—the deck can be wet and bouncy.
Personal snorkel mask
Reduces fogging and fits better than generic rental masks for longer snorkel sessions.
Reef-safe sunscreen
Protects skin and prevents chemical damage to corals.
summer
Water shoes
Useful for rocky landings or walking the sand bridge at Nangyuan without cutting feet.
Small dry bag
Keeps phone, wallet and spare clothes dry on a wet deck.