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Hibiscus fibers, commonly known as bast fibers, were the resourceful material employed by Shoichi Yokoi during his prolonged isolation on Guam. These strong, versatile fibers, extracted from the inner bark of hibiscus trees, served as a crucial component in crafting improvised clothing and other essential survival items. Yokoi's reliance on hibiscus fibers exemplifies how one can adapt and utilize nature's resources even in the most challenging of circumstances.