Private island
Southeast Asia has numerous islands, with Indonesia being an archipelago of 17,000 islands and the Philippines having around 7,100. Real estate laws restrict foreigners' ability to buy property in the geographical area, and many islands either have unclear ownership rights or are already settled. Private islands that are available in Southeast Asia's real estate market are also prohibitively costly due to being in high demand by hotel developers. Developments address these difficulties by selling private islands that have villas and neighbor islands that have high-end hotels; the proximity keeps costs of habitation down.
List of beaches in Indonesia
Indonesia is located in a region of abundant coral reefs known as the Coral Triangle as well as being the country with the most volcanoes in the world. Some beaches are derived from fluvial sands and gravels, others from cliff erosion. Coral reefs form white or yellow sanded beaches, while beach sediments derived from volcanic rocks are typically black or grey, such as those of northern Bali and southern Java. In the granitic zone of the Riau, Bangka and Belitung Islands, white quartz sands as well as granite boulders dominate. Sandy backshores are colonized by coastal vegetation, notably "Ipomoea pes-caprae" and "Spinifex littoreus", then coconut and casuarina trees. Coastal dunes are poorly developed in the humid tropics, but on the southern shores of Java and Sumatra, prograded beaches are backed by dunes, some of which carry woodland vegetation. Large deposits of lava and ash from volcanic eruptions may transport large quantities of pyroclastic sediment down to the coast, such as at Mount Merapi in southern Java and Mount Agung in Bali. The area within the Coral Triangle is associated with rich marine biodiversity. Beaches in the area, such as those that are important turtle nesting beaches, are protected by the government.