What metaphors are used in The Pearl by John Steinbeck?

While the story has its symbols and large allegorical sentiments, every facet of the tale is transcribed into metaphor. Even the minds of the Indian people are as "unsubstantial as the mirage of the Gulf." Further, they are clouded as if the mud of the sea floor has been permanently disturbed to block their vision. Even the city as seat of the colonial administration is given metaphorical animation: "A town is a thing like a colonial animal. A town has a nervous system and a head and shoulders and feet."