The definition of ecotourism varies in different parts of the world. The very concept of this type of tourism is differently understood and defined in Europe in comparison to, for example, North America. Ecotourism is not developed as some other forms of tourism, considering the fact that it makes only 3-7% of the world tourist market. Special emphasis is put on: creating the awareness of environment protection, non-contamination of nature, as well as support for the sustainable development of the entire area and local community. Protection of specific areas affirms the particular importance of their preservation. Most significant such areas in Croatia are national parks, nature parks, special reserves, as well as other protected areas wherein a particular type of tourism is developed, with some positive and negative aspects. The Brijuni National Park is a bond of natural beauty and cultural monuments of the highest value. Today it presents an elite tourist destination, with very rich flora and fauna, long history and specific buildings. In view of its high attendance and its status of a national park, the Brijuni islands require strong protection of nature conservation.