What metaphors are used in The Fish by Marianne Moore?

The split between nature and humanity is evident in the poem's metaphors, which underline the incapacity of words to adequately name the natural world. Moore's speaker cannot describe the sea without comparing it to human-made things. Comparing natural processes or actions of the sea to "ash heaps," "injured fans," and "spotlights" demonstrates that the narrator is locked within the human world of perception, though she tries to break free from it and be a part of nature's processes.