Koh Samui The most popular island where the long shores and number of attractive resorts belong.Thailand's 3rd is a palm-fringed paradise with coastal roads encircling the whole island. Aside from the lovely beaches and coral beds, it is plentiful in coconut plantations and forested hills. The more popular beaches are on the northern and eastern coasts, namely Chaweng Beach, known for its party scene and combination of luxury resort and Lamai Beach. Many international diving schools have been established an nearby Koh Tao because of its pristine beaches and abundant coral reefs whichcontribute to its reputation as the best scuba diving spot in the Gulf of Thailand.