Bunaken National Park (BNP), North Sulawesi, is a conservation area that has the beauty underwater tourism attraction. The beautiful of underwater landscapes attract both domestic and foreign tourists to visit this region. Economically, tourism has positive impact on improving the economy and welfare of the community. There are, however, negative impacts of tourism to the quality of the local environment. It is characterized by the decline in coral cover area, caused by tourism activity itself.

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... Utilization of natural resources as objects and tourist attraction should be done carefully, considering the balance of ecological, socio-economic and socio-cultural aspects. The concept of ecotourism is a concept that takes into account the balance of these three aspects, for the BNP travel management needs to be done based on the concept of ecotourism. Model of BNP travel management institutions use the systems approach to the Interpretative Structural Modeling (ISM) method. This method is carried out to see the degree of interest among the elements involved in the management of Bunaken National Parks with reference to the expert opinion. Results obtained show that the goals are to protect coral reef ecosystems as objects and tourist attraction, the institutions involved are the Board of Bunaken National Park, a strategic program that is required is to set the number of tourist visits, and the major constraint for the program is the lack of commitment from the actors involved.