John Sinclair, one of Australia's leading nature conservationists, has lead the fight to save Fraser Island since 1971 when he founded the Fraser Island Defenders Organisation. Since then he has headed all of FIDO's campaigns since to cease sandmining, to get World Heritage recognition and simultaneously to stop logging and to improve the management of recreation on the island. His battles with former Queensland Premier, Sir Johannes Bjelke-Petersen, since 1971 over this issue are well documented. He has been active in monitoring the use of the island to ensure that FIDO's aim of the wisest use of Fraser Island's natural resources is being achieved.
John Sinclair was named "Australian of the Year" for 1976 for his leading role in protecting Fraser Island. In 1990 he was honoured by the United Nations Environment Program by being named in the Global 500. He was awarded the prestigious international Goldman Environmental Prize in 1993.