<prompt> Qedela le nkulumo elandelayo: Phakathi nawo-1980 nawo-1990, imizamo yenhlangano yokusiza izilwane zasendle yayidlulela ngalé kweCalifornia. Izisebenzi ze-International Bird Rescue zachitha izinyanga eziyisithupha ziphatha izikhungo ezintathu zezinyoni nezinhlelo ezimbili zokufuna nokuqoqa izinyoni ngo-1989  <response>: Inhlekelele ye-Exxon Valdez, lapho kwachitheka khona amalitha ayizigidi ezingu-11 kawoyela ongahluziwe ePrince William Sound yase-Alaska, kwafa izinyoni zasolwandle eziphakathi kuka-100 000 no-250.000. I-Exxon Valdez yaba ukuchitheka okukhulu kokuqala lapho ukuzinza nokuthutha kwasensimini kwasetshenziswa kabanzi ekunakekelweni kwezilwane zasendle ezinamafutha. 