Borneo an island in the Malay Archipelago of Southeast Asia. It lies in the Greater Sunda group of islands about 300 miles east of Singapore. Surrounding the island are the waters of the Java, South China, Sulu, and Celebes seas and Makassar Strait. Borneo is the third largest island in the world, following Greenland and New Guinea.
Tropical rain forests, with numerous vines, flowering plants, and dense undergrowth, cover most of Borneo. Among the many animals are elephants, rhinoceroses, small leopards, bears, orangutans, gibbons, and wild pigs. The proboscis monkey is native only to Borneo. Snakes include pythons and cobras. There are many species of birds.