 Ahavuye isanamu, REEVE JOLLIFFE Insiguro yisanamu, Don Walsh ibumoso wacubiye bwa mbere mu ntera ndende yubujyakuzimu bwinyanja ya Pasifika mu gace ka Mariana Trench mu 1960, ashimira Victor Vescovo iburyo Vescovo na bagenzi be bavuga ko babonye amoko mashya agera kuri ane yibiremwa byo mu nyanja ndetse nibimera byamabara menshi byo ku mabuye yaho ku ndiba yinyanja bitabonywe mbere. 