Itsunami ngamaza olwandle asuka elwandle aze afike elunxwemeni. Itsunami itshayela yonke into esemazibuko naselunxwemeni: iinqanawa, imithi, iimoto nezindlu, kodwa nabantu nezilwanyana. Emva koko amanzi abuyela elwandle aze abangele umonakalo ongakumbi. Itsunami ibulala abantu abaninzi nezilwanyana.
Itsunami idla ngokubangelwa yinyikima ephantsi kolwandle, kunqabile ukuba kubekho ugqabhuko-dubulo lwentaba-mlilo elwandle. Xa ulwandle luphakama, amanzi aphelelwa yindawo aze atyhalelwe macala onke. Oku kudala iliza elisasazeka njengesangqa. Ngokuqhelekileyo, kukho amaza amaninzi anekhefu phakathi.
Esazulwini solwandle, awuliqapheli eli langa. Kuba amanzi enzulu kakhulu apha, iliza alikaphakami kangako okwangoku. Elunxwemeni, nangona kunjalo, amanzi akakho nzulu kangako, ngoko ke amaza kufuneka anyukele phezulu kakhulu apha. Oku kudala udonga lwangempela lwamanzi ngexesha le-tsunami. Inokukhula ngaphezu kweemitha ezingama-30 ubude, obububude besakhiwo esinemigangatho elishumi. Olu lwandle lunokutshabalalisa yonke into. Nangona kunjalo, umonakalo omkhulu ubangelwa zizinto abaziphetheyo xa ilizwe likhukula.
Abalobi baseJapan baqulunqa igama elithi "tsunami". Babeselwandle kwaye abazange baphawule nto. Ukubuya kwabo, izibuko latshatyalaliswa. Igama lesiJapan elithi "tsu-nami" lithetha amaza kwizibuko.
Iitsunami ezidluleyo ziye zasuba ubomi babantu abaninzi. Namhlanje unokulumkisa abantu ngokukhawuleza wakuba unokulinganisa inyikima emazantsi olwandle. Nangona kunjalo, i-tsunami yasasazeka ngokukhawuleza, kulwandle olunzulu ngokukhawuleza njengenqwelomoya. Ukuba kukho isilumkiso, abantu kufuneka balushiye unxweme ngoko nangoko baze basabele kude kangangoko kunokwenzeka okanye, okona kulungileyo, banyuke induli.