Threatened and Endangered Species at Olympic. Olympic is one of the most diverse wilderness areas in the United States. Its wide variety of ecosystems provide habitat critical to the survival of sensitive species, such as wild salmon, northern spotted owls, and marbled murrelets. Olympic is truly a refuge for life at risk. It protects one of the largest remaining parcels of pristine habitat for some threatened or endangered species. Learn more about threatened and endangedred species at Olympic here.