Was "The Mysterious Island" (Jules Verne) Okinawa?

Earthjustice Newsroom has an article on a ruling to help save the endangered dugong (a relative of the manatee, native of Florida) in the Pacific, threatened to extinction, perhaps, by the US Department of Defense, if allowed to proceed (airport on coral currently blocked). In Jules Verne's "Mysterious Island" there is a lagoon, in which a dugong swims, which leaves quite an impression. Perhaps the island was somewhere else, heh, its fiction! But the movie had nothing to do with book, or barely. The film creator just passed on, a tribute as it was to stop action animation and cinematography, however.