The Mitsui & Co. Environment Fund

Introduction to Grant Projects

NPO Churaumi Shinkokai

Coral reef restoration project for the Chibishi area off Okinawa's Kerama Islands

Activity grant

Project Description

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.

Preservation of biodiversity and ecosystem
Grant year
FY2009 Activity Grants
Grant term
3 years
October 2009 - September 2012
Grant amount
5,400,000 yen
Activity region
Chibishi sea area, Kerama Islands, Okinawa, Japan
Planting coral

Overview of the Organization

Satoshi Matsui
Satoshi Matsui
Establishment purpose
Churaumi Shinkokai was started by a voluntary collective of Okinawan diving shop owners who want to restore the waters of Okinawa to the condition they were in twenty years previously in order to leave beautiful seas for future generations.
Main areas of activity
Okinawa Island, Kerama Islands, Chibishi sea area, Japan
10 part-time staff members, 26 member organizations
Annual operating budget
3.82 million yen in 2008
WEB site
Recent activity
  • (1) Coral planting
  • (2) Cleaning activities in water and on land
  • (3) Cleaning uninhabited islands
  • (4) CPR training for members