Fish are a major part of coastal people's diet. Forestry in Indonesia includes bamboo, mangrove bark, which is used for dyes, and cinchona bark, which is used for medicine in Indonesia. The transportation is small because of the mountains and forests. Small vehicles called ''Bemos'' pick up and let off passengers along Indonesian roads. Railroads operate on the islands of Java, Mandura, and Sumatra.
Vessels carry passengers and freight along coastal islands.
Near Jakarta there is a place called Tanjungperiuh. It is a very large leading port. Airlines fly along Indonesia and other countries. The main airport is near Jakarta. The main communication comes from postal companies, telegraph, telephone, TV, and radio systems.