In "The Mark of Athena" by Rick Riordan, Annabeth expresses a deep emotional connection to Percy. She reflects on the possibility of a breakup and fears that such an event would cast a shadow over her cherished memories of the sea. The water symbolizes both beauty and joy in her life, but also pain if their relationship were to end.

This moment highlights Annabeth's vulnerability and the intensity of her feelings for Percy. The ocean, a place that brings her happiness, would become a constant reminder of her heartache, illustrating the profound impact that love can have on personal experiences and memories.