抄録
An overview is presented for the current status of the activities on domestic and international volunteer groups on coastal cleanup. These clean-up volunteers dedicate to conserve coastal and river enviroment, scenery and wildlife. In pursuit of these conservational goals, the groups promote public awareness, education and citizen involvement. At the present, the international clean-up network has been expanding, the number of participants for coastal clean-up campaigns has increased more than one hundred thousands and collected debris has been analysed into scientific data. The activities will continue to be important from now on, not only because the coastal debris is the worst source damaging coastal environment, but also because the clean-up provides good educational practice to search for desirable human-nature relationship in coastal and river zone.