Great Barrier Reef (IMAGE) Ecological Society of America Caption The Great Barrier Reef has great cultural value to local residents as well as domestic and international tourists. In 2013 it was estimated that the GBR received 53.3 million use days, with 98 percent of all use days consisting of tourist visitation. Credit ©M Curnock Usage Restrictions Photo courtesy of ©M Curnock. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.