Insular Southeast Asia refers to the group of islands located in the southeastern part of Asia, primarily within the Malay Archipelago. This region includes countries such as Indonesia, Philippines, Malaysia, and Brunei. It is characterized by its diverse cultures, languages, and ecosystems, with thousands of islands varying in size and geography. The area is known for its rich biodiversity, featuring tropical rainforests, coral reefs, and unique wildlife. Economically, Insular Southeast Asia relies on agriculture, tourism, and fishing. The region also faces challenges such as environmental degradation and natural disasters, including earthquakes and volcanic eruptions.