Which Books Use A Mermaid Hook To Explore Mythical Sea Creature Legends?

I've always been drawn to the more tragic, folkloric takes on mermaids rather than the Disneyfied versions. 'The Mermaid of Black Conch' by Monique Roffey does this haunting thing where the mermaid is pulled from the sea, and the story becomes this slow-burn exploration of captivity and cultural displacement. It’s less about singing and shells and more about the violence of being turned into a spectacle. Roffey pulls from Caribbean folklore, which feels fresh and raw. You get this sense of a creature that’s part of an ecosystem, not just a pretty metaphor.

Another one that hooked me was 'Into the Drowning Deep' by Mira Grant. Okay, it’s technically about killer mermaids, but it’s so grounded in marine biology and cryptid theories. The mermaids there aren’t mythical in the ancient sense—they’re presented as a predatory species we just never properly documented. The book uses the 'hook' of a documentary crew going to find them to dive into deep-sea exploration myths and how we fill knowledge gaps with legend. It’s a page-turner, but it made me look at ocean trenches differently.

Christina Henry's 'The Mermaid' retells the Andersen tale with a sharper edge, focusing on P.T. Barnum's 'Feejee Mermaid' exhibit. It’s a brutal look at how myths get commodified. The mermaid’s perspective is alien and deeply connected to sea legends of shipwrecks and drownings, which Barnum twists into a spectacle. The novel uses that historical hoax to ask what parts of a legend we choose to believe and why. It’s less about exploring the legend itself and more about exploring the human need to create and then exploit it.

A lot of urban fantasy gets this right by weaving mermaids into modern settings while keeping the old legends intact. Seanan McGuire's 'October Daye' series has a Merrow character, and the rules around their existence—like their inability to lie—come straight from older folklore. The series treats them as one faction among many fae, which adds a political layer to the mythical creature angle. Their power is tied to specific bodies of water, and crossing them has consequences; it’ choose your battles' kind of worldbuilding.

Then there’s 'The Mermaid, the Witch, and the Sea' by Maggie Tokuda-Hall, which uses the mermaid’s transformative blood as a central plot device. It leans into the siren song myth but frames it as a tool of resistance against colonial powers. The sea itself is almost a character, and the mermaid legend is less about the creature herself and more about the stories sailors tell to explain the unexplainable violence of the ocean. It’s a YA book, but the mythological weight is handled with a serious touch.