This area consists of two bays, Lang Khai itself and the other smaller Lad Bay, and these form one of the best hidden and less-known snorkeling points of Koh Tao.Lang Khai Bay has a small beach in front of a valley between two high hills. Several large boulders are covered with various kinds of unspoiled new and older corals, both soft and hard. The best snorkeling point is on the north side, with the steeper sea floor at a depth of 5–23 metres. At Lad Bay, there is Moondance Magic View Resort at the end of the road built on the cliff and provides an accessible walkway down to a stunning snorkeling point and a small dive site of Koh Tao, King Kong Rock.
Several large boulders are covered with various kinds of unspoiled new and older corals.