To us a lifetime is forever. But, in the grand scheme of things our existence is evanescent. The soul, energy or form though, is perpetual. Nothing really disappears, it just transforms. A simple predated mussel. Provides life to the creature that consumed it while leaving the shell to slowly be transformed by the sea into the finest grains of sand. This sand can produce beautiful patterns on the beach that change with each wave. However, it can also provide a home for other creatures, or the foundations for growth.