Since the 1990s, the appearance of large populations of crown-of-thorns starfish and increased sea water temperatures due to global warming have had a devastating impact on the hundreds of coral species found in the seas off Okinawa. Churaumi Shinkokai is working with local divers to save these coral species from extinction by removing starfish and cleaning the surrounding waters, but the situation remains precarious. Since its establishment, Churaumi Shinkokai has also been planting coral in the Chibishi reefs off the Kerama Islands in order to restore these reefs as quickly as possible. This project aims to get up to 1,500 people to participate in planting a total of 3,000 corals over three years. Following planting, regular monthly monitoring will be carried out to measure growth and survival rate, the areas around the coral will be cleaned, and cages and nets set up to prevent predation. This activity will help maintain coral reef ecosystems, and the monitoring data will be analysed and collected to improve factors such as planting methods and coral conditions.