Koh Lanta Yai Island. With clear, cool waters and superb white sand beaches stretching along. The tourist season in Ko Lanta runs from October through April with the most visitors here December to March.
The main island of Koh Lanta actually consists of two separate islands: Koh Lanta Noi, the smaller part in the north, and Ko Lanta Yai.
However, the biggest and most popular is Koh Lanta Yai (big Lanta Island).
Speedboat & Ferry travel to Lanta Island is simple and enjoyable. Probably because it's not so Koh Lanta is formed also by Koh Lanta Noi. It has resisted rapid tourist development like no other island in the country.