Hin Wong Bay

North-east coast; this bay is abundant with intact coral reefs. Four small hillside resorts and one diving school (Hin Wong Divers)

Mango Bay

Mango Bay is perhaps one of the best snorkelling spots on Koh Tao.

The shallow bay offers a great diversity with regards to fish and corals. Maximum depth is around 10 meters, if you stay shallow you will see amazing colors and big schools of large and small coral fish. There is also a good chance of seeing a turtle.

Laem Thian

Laem Thian is a very small bay, or cape rather, on Koh Tao's eastern side. It's very secluded and a hard spot to get to.

The bay, however, offers great snorkelling and scuba diving.
Crystal clear water.

Rocky Bay

Rocky Bay is perhaps one of the most famous spots on Koh Tao.

If you go snorkelling there you are nearly guaranteed to encounter a batch of friendly Black Tip Reef sharks that hunt their prey (don't worry - small fish) in the shallows. If you are lucky you can see as many as up to five at a time.

Rocky Bay is also an excellent place to just relaxed and lie on the beach. The sand is very white and the water calm and shallow.

The beach is usually not very crowded, which is quite surprising but great if you want a bit of seclusion.