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These books are ranked using the setting labels extracted for A Letter to the Luminous Deep.
Setting labels used: underwater world, undersea dwelling, ocean world, mostly water-covered world, magical academia, scholarly society, pressurized spheres, undersea research settlement, deep sea
This does not mean the books share the same plot, setting, quality, or difficulty. It means their setting embeddings are close.
Two separated lovers and their siblings pursue reunion through letters, scholar secrets, and an ominous oceanic mystery.
Why this is here
Setting labels: underwater city · ocean fantasy · alternate world · scholarly society · archival setting · magical academia · cosmic-scale setting · deep sea · queernormative world · experimental reality
Semantic match: ranked by setting
Distance: 0.1237
A cloned woman and a freed sea god are forced into alliance, igniting a dangerous romance that could save or sink humanity.
Why this is here
Setting labels: underwater · oceanic · postapocalyptic · near-dystopian · futuristic · surface world · human settlement · submerged facilities · science labs · mythic fantasy
Semantic match: ranked by setting
Distance: 0.1647
In a flooded future, a diver revives her dead sister for 24 hours to uncover a family secret, but escape turns into a chase.
Why this is here
Setting labels: post-apocalyptic · flooded world · water world · ocean world · underwater ruins · floating settlements · reef communities · island facility · dystopian future · scientific facility · Old World
Semantic match: ranked by setting
Distance: 0.1764
A kraken bodyguard and a grieving scientist bond in the deep sea, where forbidden attraction grows into survival and love.
Why this is here
Setting labels: underwater · deep sea · ocean floor · abyssal plane · ocean trench · undersea facility · high-pressure environment · classified research site · monster world · science fiction-inflected fantasy
Semantic match: ranked by setting
Distance: 0.1853
A teen Traveler journeys to an all-water world to stop disaster, while his journals spark trouble back home.
Why this is here
Setting labels: water world · floating cities · underwater civilization · parallel world · territory system · fictional planet · future past · imaginary places
Semantic match: ranked by setting
Distance: 0.1914
A human botanist’s new-job lottery turns into an underwater alien marriage of convenience on a world full of danger.
Why this is here
Setting labels: Aquaria · underwater city · ocean world · alien planet · human colony · surface settlement · spacefaring future · under the sea · water planet
Semantic match: ranked by setting
Distance: 0.1947
![Cover of 宝石の国 2 [Hōseki no Kuni 2] by Haruko Ichikawa](https://m.media-amazon.com/images/S/compressed.photo.goodreads.com/books/1655999554i/26238640.jpg)
A gem-bodied outcast dives into the sea for answers, uncovering buried world secrets and a widening conflict.
Why this is here
Setting labels: mostly empty world · underwater world · ocean · futurist world · post-human world · fantasy world · nonhuman society
Semantic match: ranked by setting
Distance: 0.1959
Aquaman is forced to choose between Atlantis and the Justice League when a false-flag attack sparks all-out war.
Why this is here
Setting labels: Atlantis · surface world · Eastern seaboard · oceanic setting · undersea kingdom · urban destruction · shared-universe setting
Semantic match: ranked by setting
Distance: 0.1959
A merfolk historian burdened by ancestral memory flees the deep and must face her people’s past to help them survive.
Why this is here
Setting labels: undersea world · ocean · surface world · mythic reality · African diaspora fantasy
Semantic match: ranked by setting
Distance: 0.1997
A storm strands a guilt-ridden human with a possessive kraken wanderer, forcing a forbidden bond across land and sea.
Why this is here
Setting labels: off-world colony · planetary settlement · underwater society · ocean setting · future setting · post-colonial world · primitive-tech mix · hidden civilization · abandoned facility · land and sea divide
Semantic match: ranked by setting
Distance: 0.2035
Emily and her companions seek lost memories on Algos Island, uncovering secrets that could change everything.
Why this is here
Setting labels: fantasy world · underwater setting · island setting · imaginary places · steampunk world · portal fantasy · ancient forests · fantastic cities · ocean setting
Semantic match: ranked by setting
Distance: 0.2036
A brother descends to a deep-sea research station amid a memory plague and finds the cure may be worse than the disease.
Why this is here
Setting labels: Mariana Trench · deep sea · underwater station · research lab · Pacific Ocean · lightless depths · isolated facility · submersible descent · claustrophobic enclosure · apocalyptic world
Semantic match: ranked by setting
Distance: 0.2037
