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You could use symbols and motifs. This sounds very obvious, but like all literary techniques, if done well it works. It could be the use of the colour red. It could be the mention of a poetic work....
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You could use symbols and motifs. This sounds very obvious, but like all literary techniques, if done well it works. It could be the use of the colour red. It could be the mention of a poetic work. It could be the constant use of metaphors connected with the sea. Think of the symbols and motifs and then insert them at appropriate places.