In order to achieve destination competitiveness and its sustainability, it is crucial to keep track of touristic trends. Following the trends and adoption of the same is creating new content for touristic offer. Island of Mljet belongs to Dubrovnik's group of islands, and it is the biggest one. Mljet is a part of Mediterranean climate scope which is the reason why tourism is so developed. Quantitative trends are not changing throughout the years, but on the other hand qualitative trends are changing due to different factors. The keys to success are prompt actions and analysis of trends, due to variability of the system which can have both positive and negative consequences. Both quantitative and qualitative touristic trends are shown in this project as their positive and negative impact on the tourism. Growth of the touristic development in Dubrovnik is evidently slowing down, although it doesn't look like that at first. The reason for decreased growth lays down in the absence selective tourism and desire for increased demand, while in the same time there is a lack of control regarding quality and sustainability. Positive trends can affect tourist destination negatively as well. Island of Mljet would be ideal for selective forms of tourism due to its potentials and scope. Already developed forms of selective tourism can be found in this project, as well as proposals on how to improve the quality of existing touristic offer while assuring sustainability.