Launched in 1989, ReefGuardian International (RGI) is a U.S. non-profit membership organization exclusively dedicated to the worldwide protection of coral reefs and their marine life.

• “国际礁石保护组织”（RGI）成立于1989年，是一个专门致力于保护珊瑚礁及其海洋环境的非营利性组织。