Transport in Indonesia
Air transport in Indonesia serves as a critical means of connecting the thousands of islands throughout the archipelago. Indonesia is the largest archipelagic country in the world, extending from east to west and from north to south, comprising 13,466 islands, with 922 of those permanently inhabited. With an estimated population of over 255 million people — making it the world's fourth-most-populous country — and also due to the growth of the middle-class, the boom of low-cost carriers in the recent decade, and overall economic growth, many domestic travellers shifted from land and sea transport to faster and more comfortable air travel. Indonesia is widely regarded as an emerging market for air travel in the region. Between 2009 and 2014, the number of Indonesian air passengers increased from 27,421,235 to 94,504,086, an increase of over threefold.
Protected areas of Indonesia
Protected areas of Indonesia comprise both terrestrial and marine environments in any of the six IUCN Protected Area categories. There are over 500 protected areas in Indonesia, of which 50 national parks are covering 16.4 million ha, and another 527 nature and game reserves cover further 28.3 million ha. The total protected land area represents over 15% of Indonesia's landmass. Marine Protected Areas comprise over 15.7 million ha representing ca. 5% of territorial waters.