The poem depicts the harshness of nature through the image of a jawbone found on the seashore. The sea is portrayed as unfeeling force that consumes all in its path, leaving behind only indigestible remnants on the beach. The poem has three stanzas with varying line structures but consistent rhyme schemes. Literary devices like metaphor, synecdoche, and personification are used to represent the jawbone as a relic of human mortality and the relentless cruelty of time and nature.