How does the poet describe the fog as if it were a living being?

The poet gives the fog a sense of movement and liveliness through his use of animal imagery. The fog is visualised as coming on little 'cat' feet, it looks over the harbor and city and then moves away, as if its on haunches.

Explanation:

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you need to post the passage so we know what you’re talking about

because they were not just any seashells they were sally's seashells