The property covers 181,851 hectares and includes all of K’gari and several small islands off the island's west coast. The development of rainforest vegetation on coastal dune systems at the scale found on K’gari is unique, plus the island boasts the world’s largest unconfined aquifer on a sand island. Criterion (vii): K’gari is the largest sand island in the world, containing a diverse range of features that are of exceptional natural beauty. Indigenous, community and scientific advice on protection and management of the World Heritage values is provided to the State of Queensland and Australian Governments by three K’gari World Heritage Area Advisory Committees. In 2007, K’gari was added to the National Heritage List, in recognition of its national heritage significance under the Act.