"The Association to Protect the Northernmost Dugong" seeks to protect the dugong in Okinawa, the northermost population of the species and seriously threatened with extinction. Association to Protect the Northernmost Dugong c/o Kenichi Iyanaga Senjudo 497-4,Ranzan, Hikigun,Saitama-ken 〒355-0227 　JAPAN e-mail: info@sea-dugong.org