Spend a full day snorkeling the coral terraces and sandbars of Koh Nangyuan and five hidden bays around Koh Tao. Expect clear water, sea turtles, blacktip reef sharks and a Thai-style boxed lunch with free underwater photography.
More ways to explore the area's outdoor wonders
A warm breeze pushes off Mae Haad pier as the longtail slips away from Koh Tao and the first turquoise hints of Koh Nangyuan appear on the horizon. Salt and diesel mix in the air; ladders clank as guests rig masks and fins. Within minutes the boat drops anchor above coral plates and a guide signals the start — the sea here pulls you in.
Difficulty
easy
Duration
6–7 hours
Fitness Level
Suitable for most people comfortable with repeated shallow water entries and short swims; basic swimming ability recommended.
Wildlife
History
Koh Nangyuan’s three islets and sandbar were formed by reef growth and currents; the area has long supported small-scale fishing and day‑trip tourism.
Conservation
Visitors are urged to use reef-safe sunscreens, avoid standing on coral and follow guides’ instructions; Nangyuan has strict rules to limit environmental impact and overnight stays.
Reserve your spot on the Koh Tao, Koh Nangyuan and Hidden Bays Snorkeling with Lunch 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 reapply before re-entry; guides may refuse lotions that damage reefs.
Wear water shoes
Shallow reefs and rocky shorelines make water shoes useful for entries and short walks on Nangyuan’s sandbar.
Time your swim with the tide
Calmer conditions and better visibility usually occur near slack tide—ask your guide which bays are best that day.
Use guide-provided gear if unsure
Masks and snorkels are included; ask for a fit check and flotation vest if you’re not a confident swimmer.
Reef-safe sunscreen
Protects both skin and coral; required by many local operators.
summer
Water shoes
Protect your feet when entering rocky or coral-fringed beaches.
summer
Quick-dry swimwear & towel
Dries fast between swims and keeps you comfortable on the boat.
summer
Light waterproof phone case or camera
Useful for extra photos although free underwater photography is provided.
summer