The Sunda Islands are a group of islands located in Southeast Asia, primarily divided between Indonesia and Malaysia. This archipelago includes major islands such as Sumatra, Java, Bali, and Borneo. The region is known for its rich biodiversity, tropical rainforests, and unique wildlife, including species like the orangutan and the Sumatran tiger. The Sunda Islands are part of the larger Sundaland region, which was once connected to the Asian mainland during periods of low sea levels. This geographical history has contributed to the islands' diverse ecosystems and cultural heritage, with various ethnic groups and languages present across the islands.