by Saltwater Smarts | May 1, 2016 | Corals, Equipment, Fish, Reef, ScienceFields of maricultured Acropora in Onna, Okinawa, JapanOkinawa, Japan is known for its great diving and lush coral reefs. Going into it, I didn’t know what to expect with this dive. I’ve heard all sorts of cautionary tales about diving in Okinawa due to its strong currents, but I’ve also heard that the quality of the reefs is practically unmatched. The day of my scheduled dive was rough. It started raining heavily, and that pretty much limited the dive locations that were available for safety reasons. The single dive location would be just off the coast of our hotel in the Manza Beach area of Onna-son. Onna is located in the central part of the island and is where most of the resort hotels are located.