The checked local official tourism and active operator pages did not establish a compulsory Yonaguni-specific scuba marine-park tag, environmental levy, or blanket dive permit. This is a negative research result, not proof that no site-specific or future charge exists. Operators charge separately for boats, guides, cylinders and rentals; confirm current prices and cancellation rules. Ferry passages and the Ayamihabiru museum are additional optional paid services. The Monument should not be treated as an archaeological excavation site or an unrestricted right of access. Dive terms; Ferry; Museum.