In "Rogue Wave" by Theodore Taylor, the two settings are the open ocean and the characters' stranded boat, the "Mako." The vast, unpredictable ocean represents danger and the struggle for survival, while the confined space of the Mako symbolizes both hope and entrapment. Together, these settings create a tension that highlights the characters' resilience and resourcefulness as they confront nature's challenges. The contrast between the expansive sea and the limited safety of the boat underscores the themes of isolation and the fight against overwhelming odds.