The purpose of this study is to propose a solution of linkage with regional tourist infrastructure to develop an optimized administration model for scuba-diving resorts that can create regional brands through the specialization of marine sports tourism. First, the core elements to realize the core value; the maximization of the essential value of scuba-diving resorts and the regional development, are the maximization of strong operation ability, the maximization of administrative performance and the maximization of organizational capacity. Second, as the assessment items and criteria for the selection of location for scuba-diving resort, main items are underwater environment, climate, regional tourist conditions, regional receptive level, accessibility of transportation and possibility of developing marin tourist complex, and each main item has 2-6 sub-items. Third, various services such as tourism in connection with region, accommodation and locally specialized products should be provided to visitors in a form of resort focused on scuba-diving service, and optimized administration model of marine management to co-work with local fisherman should be established. Fourth, scuba-diving sites should be revitalized through increasing the number of scuba-divers by developing the market that can secure consumers, considering the existing small scuba-diving shops and maintaining cooperative relationship with the local fishery residences, and a new model should be created to foster the scuba-diving resort industry by organizing advisory panel mainly with the personnels who have good experience in diving training institutes, media, equipment suppliers and resorts to develop policies for the advancement and future of scuba-diving or develop a good system applicable to large center. Lastly, if government, academy, marin industry and local community make together a co-work to drive scuba-diving industrial cluster, select the suitable location for the cluster and maximize the industrial convergence by combining local scuba-diving resort industry into one, not only the economic advancement which is the essential value of local development but also a new value of sustainable marin industry could be created.