The Lastovo Islands Nature Park (Lastovo Islands NP) was one of the first protected areas to be designated in Croatia, established in 2006. The area has been able to preserve its natural and cultural heritage due to the fact that it is an isolated and distant archipelago that was a closed military zone until the 1990s. In the last two decades the Lastovo Islands have begun to develop their economy, which is primarily based on tourism, followed by fisheries and small-scale agriculture. The number of tourists visiting the archipelago is increasing each year, especially the number of nautical tourists, who are attracted by the well-preserved nature, numerous coves and bays and good fish restaurants. Infrastructure and tourist facilities are not well developed and more construction is expected in the future, bringing with it increased pressure on the environment in coves and bays where the installation of new mooring facilities is planned. The Nature Park is currently in the process of developing physical and park management plans to establish the basis of future tourism development and management. Here we explore how ecological economics could be used to support decisionmaking for the sustainable development of the Lastovo Islands.