Snorkelling in Koh Tao

Blacktip reef sharks

The most famous snorkelling spot on the island. Blacktip reef sharks rest in the sandy shallows here year-round — completely harmless and endlessly fascinating. Shallow, calm, and good for all ages.

• Best in the morning before tour boats arrive
• Sharks are in the shallows — no need to go deep

Vibrant coral gardens

Two adjacent sites off Koh Nang Yuan with some of the most colourful and healthy coral around Koh Tao. Teeming with reef fish, nudibranchs, and the occasional turtle. Sheltered and clear.

• Access via longtail boat from Mae Haad
• Two spots — north is shallower, south goes deeper

Peaceful & crowd-free

Tucked on the northern tip, Mango Bay is one of the quieter spots on the island. Rocky terrain meets healthy coral, and it sees far fewer visitors than the southern bays. Pristine and worth the trip.

• Access by longtail or kayak — no road access
• Great for snorkelling directly from the beach

Clear water & rocky walls

A dramatic east-coast bay with gin-clear water and large boulders forming natural underwater corridors. Excellent visibility and a rich variety of marine life. A bit more exposed — best on calm days.

• Check wind direction — faces east, can be choppy
• Bring your own gear; remote bay with no shops

Exceptional visibility

A beautiful sheltered bay on the east side with stunning clear water and easy beach access. Coral close to shore, good fish life, and a relaxed atmosphere. One of Koh Tao's most scenic spots.

• Drive or hike in — no boat needed
• Snorkel the right side of the bay for the best coral

Sea turtles almost guaranteed

This shallow, sheltered bay in the south is arguably the best spot to see sea turtles on Koh Tao. They feed on the seagrass beds here regularly. Calm waters make it perfect for beginners and families.

• Morning sessions before 10am are best
• Keep distance from turtles — watch, don't chase

Hidden & secluded

A small, quiet beach on the southwest tip accessible only by boat or a short hike. The snorkelling just off the beach is lovely — coral heads, reef fish, and very few people. A proper hidden gem.

• Take a water taxi from Chalok Ban Kao pier
• Combine with a sunset visit — faces west

Coral right from shore

Small and secluded, Freedom Beach has coral growing very close to the shore — no swim required to find marine life. Popular with those who prefer a more laid-back experience without organised tours.

• Access from Sairee by water taxi
• Shallow enough to stand in most areas