The passage uses figurative language such as personification, metaphor, and simile to create a mood of tension and suspense, which is heightened by the protagonist's precarious situation.
In the bolded lines, three significant examples of figurative language are used: personification, metaphor, and simile. The personification is evident in the 'blood-warm waters of the Caribbean Sea,' which lends human characteristics to the sea, implying a kind of menacing intimacy. The metaphor is found in 'The Night Would Be My Eyelids,' where the night is directly compared to eyelids, suggesting envelopment and darkness without needing to close one's eyes. Lastly, the simile is present in 'like trying to see through a blanket,' comparing the effort to see in the darkness to the impossibility of seeing through a dense fabric, thus conveying a sense of deep obscurity.
The overall mood of the passage is one of tension, suspense, and impending doom. This mood is set by the abrupt interruption of the quiet night with the sound of gunshots, followed by Rainsford's fall into the sea and his desperate actions to survive and make sense of his perilous situation.
The figurative language contributes to the mood by enhancing the sensory experiences of the character and reader. The personification of the waters makes the ocean seem like an active enemy; the metaphor of the night as eyelids enhance the oppressive darkness surrounding the protagonist; and the simile of the blanket underscores the impenetrable darkness and confusion Rainsford faces. Taken together, these devices deepen the reader’s immersion in the narrative, elevating the suspense and urgency felt by Rainsford and transmitted to the reader.