Sun sets over scuba diving boats in Koh Tao, Thailand, Southeast Asia, Asia

travel destination photography horizontal colour image koh tao thailand southeast asia asia boat sunset outdoors cloudy sky transportation landscape scenics physical geography non urban scene no people thai culture silhouette sunlight dramatic sky moored sea thai asian south east asia south east asian southeast asian colour color image color outside tourist destination travel nobody no one no one topography scenery scenic scene scenes picturesque transport typically thai traditional culture tradition traditional traditionally thai sundown dusk twilight