Cogon grass, Nipa palm leaves and coconut fronds are used as roof thatching. Some have galvanized roofs, some have tiled roofs, and some have nipa or cogon roofs. The rest is covered predominantly by Cogon grass ("Imperata cylindrica"). On the other hand, cogon / nipa / anahaw for the roofs accounted to 49.93%. The grasslands are characterized by the dominance of Cogon grass ("Imperata cylindrica") and "Saccharum spontaneum". The grassland ("parang") is dominated by cogon ("Imperata cylindrica") and "talahib" ("Saccharum ovatum") grasses. It was once built with cogon and bamboo by Augustinian friars around 1788. Believers built a new church made of bamboo and cogon thatch to refurbish the former. The ground cover consists of "Arundinella setosa", cogon grass ("Imperata cylindrica") and "Themeda anathera". Its habitat is in dense cogon grassland, and primary and secondary forest. Traditionally, all structures have "inatep", cogon grass roofs. They live in houses made of bamboo and cogon grass. Their houses are usually made of bamboo and cogon. A common expression in the Philippines is "ningas cogon" ('cogon brush fire'). Popular dive sites include Coconut Point, Mamsa, Cogon, Rockpoint and Chapel.