Regarding protection of our underwater cultural heritage, the "seafloor historical museum Econcept is thriving, with many countries already designating sites on the seafloor as historical monuments, making use of them as cultural and tourism resources. Along Japan's coasts, Okinawa's underwater cultural heritage is gaining attention, but the sites have yet even to be accurately mapped. In order to ensure its economically viable and reliable protection, the underwater cultural heritage should be made use of as an ocean resource that can also serve as cultural and tourism resources.

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