In recent years, coastal regions in Japan have been used as not only sea bathing resorts, but also as spaces for marine sports. This study clarifies processes and factors that lead to the formation of the tourist resort in the settlement of Osezaki in Numazu-shi, Shizuoka prefecture, as a typical case of the tourist resort for divers that located around the metropolitan area. The results are as follows. 1. Scuba diving was introduced into Japan in 1947, and has become widespread rapidly after 1980's. With the increase of divers, 178 diving spots have been opened until now. They can be classified into two types; the first type locates near the metropolitan area and the second type locates on islands in low latitudes. Osezaki as a diving spot is the typical case of the first type. 2. The inhabitants on Enashi-ku have depended upon coastal fishery, farming and production of firewood until 1950's. But with the rapid development of orange farming in 1960's, most of inhabitants became more dependant upon farming which utilized on terraced fields and made a comfortable income. For that reason, most of inhabitants were not interested in the operation of recreational industry on Osezaki in 1960's. 3. With the improvement of traffic means and the decline of orange farming that was caused by the sudden fall of the price of oranges, some inhabitants of Enashi-ku started to operate the minsyuku (cheap lodging house in tourist resorts) as a principal occupation after 1970's. Enashi-ku as the community also started to operate the car park for tourists, using their common land. 4. After the opening of diving spot of Osezaki in 1985, the number of divers has rapidly increased. And now, divers who visit to Osezaki amount to 85000 a year. As a results most of minshuku come to put diving service shops in their buildings and the settlement of Osezaki as the minshuku region changed to the tourist resort for divers. 5. The superiority as a diving area (shortness of the time distance from Tokyo, beautiful landscape under the sea etc.) is important as fundamental conditions of the formation of the tourist resort for divers. On the other hand, managers of minshuku have positively offered special services for divers, because of maintaining their stability of operation. Divers who visit to Osezaki throughout the year were attractive for managers of minshuku as customers. 6. The fishermen's cooperative of Uchiura has levied the charge (330yen per day) on each of divers since 1985, and about 50 percent of their income have distributed to Enashi-ku. Enashi-ku also has gained some income by the operation of the car park. These profits have been distributed to inhabitants of Enashi-ku directly or indirectly. But one of divers entered a lawsuit against the fishermen's cooperative of Uchiura on the grounds that levying of the charge by the fishermen's cooperative was unfair (it is pending in court now.) Local inhabitants are apprehensive that it may be a menace to the base of the enormous income. The desirable relationship between local inhabitants and divers is groped now.