The Tiwi Islands are located approximately 80km north of Darwin in the Arafura Sea. There are two main islands - Melville Island and Bathurst Island separated by the Aspley Strait with 9 other uninhabited Islands making up the Tiwi Islands - Buchanan, Harris, Seagull, Karslake, Irritutu, Clift, Turiturina, Matingalia and Nodlaw. The two Islands have a population of approximately 3,000 with the main portion of the population living in Wurrumiyanga or Nguiu as it was first named. Transport between Bathurst and Melville Island is by the car/passenger ferry operated by the Tiwi Island Regional Council or by private boat . The Tiwi Islands are connected to the mainland by Fly Tiwi which operates daily to both Bathurst and Melville Island or through Sealink Ferry services operated 3 times per week to Bathurst Island. All food and other materials are transported to the Islands by barge through Seaswift or Barge Express. Who do weekly deliveries and by private barge charters available through a number of Darwin based barge companies.