Sibuyan is a crescent-shaped island, the second largest in an archipelago comprising Romblon Province, Philippines. Located in the namesake Sibuyan Sea, it has an area of and has a total population of 62,815 as of 2020 census. The island has two prominent peaks, the highest is Mount Guiting-Guiting with an elevation of and Mount Nailog with a height of . The people speak the Sibuyanon dialect of Romblomanon, a Visayan language. Sibuyan has been dubbed by some local and international natural scientists as "the Galápagos of Asia", because it has remained in isolation from the rest of the world since its formation. Never in its geological history has it ever been connected with any part of the Philippine archipelago. Seismic forces pushed up a peak from the earth's crust, forming a series of smaller peaks and slopes. The peak is Mt. Guiting-Guiting (literally means "the saw-toothed mountain", in reference to its jagged ridge). Because of the steep slopes, much of its original forest remains untouched, and the rest is the island as we find it today. Primary forests cover , which is 33% of the land area of Sibuyan. However, most of the lower altitude forest has been logged or is secondary. Mt. Guiting-guiting Natural Park (equivalent to the IUCN category of National Park) was established to protect these forests, which are mainly in the centre and north of the island, and covers an area of out of Sibuyan's total area of . The park features a scenic landscape with twin towering peaks set amidst closed canopy forests. Its forests remain largely intact, and include the entire elevational gradient from lowland dipterocarp forest (at 200 to 900 m) and mangroves, through montane forest (above 700 m) to mossy forest, heathland and montane grassland around the peaks. Political subdivision The island is divided into three municipalities: Cajidiocan, Magdiwang, and San Fernando. Biodiversity Sibuyan has a rich biodiversity of flora and fauna. Exact figures on numbers of total plant species are hard to give, as biologists stumble upon species yet unidentified by the scientific community. In one study, the National Museum identified 1,551 trees in a single hectare, with 123 species of trees, and of this number, 54 are found nowhere else in the world. Hence, it has been proclaimed as one of the world's most diverse and dense forests. There are estimated to be 700 vascular plant species on the island.