Mermaids Fantasy Books: Best Reads

Mermaid fantasy centers on ocean worlds, siren legends, and aquatic societies. Stories often blend sea magic, royal intrigue, and coastal adventure for ocean‑loving readers.

Curated by Fabled Tome

1 Books in subgenre
Apr 13, 2026 Last updated
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1 In Other Lands

In Other Lands

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Rated 4.35 out of 5 stars, based on 13,144 reviews.

In Other Lands by Sarah Rees Brennan follows Elliot, a sharp-tongued, academically inclined thirteen-year-old who discovers a hidden wall and gains entry to the magical Borderlands. Expect a fantasy setting where modern technology fails, mermaids exist alongside elves and harpies, and a military-style training school replaces ordinary classes. As Elliot navigates combat drills he never wanted, he becomes entangled with Serene-Heart-in-the-Chaos-of-Battle, an elven warrior, and her charismatic human friend Luke, forming bonds that complicate his assumptions about heroism, romance, and loyalty. Blending humor, young adult romance, and queer themes, the novel traces Elliot’s growth from outsider to someone who might influence the fate of this strange world.

Book 1 of In Other Lands series