Mango Bay is located in the northern tip of Koh Tao and is a popular snorkelling site. It is a shallow bay with a maximum depth of 10 metres and has large schools of coral fish.
It has a resort which gives free pickup service; the beach can only be reached via boat. It was chosen as a part of the project called Giant Clam garden by marine biologists in 2004 and occasionally turtles can be spotted here.