Books like The sapphire princess helps a mermaid by Jahnna N. Malcolm

In a society split by blood color, Mare Barrow, a low‑born Red, discovers she can forge a blade from glass and joins the rebellion against the Silver rulers.

The third book in Victoria Aveyard’s #1 New York Times bestselling Red Queen series – a high‑stakes fantasy about rebellion, power, and loyalty, set in a world where bloodlines dictate ability.

A young prince’s happy marriage to a mermaid is jeopardised when a wicked witch casts an evil spell.

A prince from the mythical kingdom of Syrena travels to the surface world to find a girl who can talk to fish, discovering that she may hold the key to his people’s future.

In the fantasy realm of Mytica, King Gaius’s decree to build a road into the Forbidden Mountains sparks a perilous journey for a dethroned princess, a reluctant heir, a haunted sorceress, and a desperate rebel.

Three kingdoms on the brink of war.

A political crisis threatens to destroy the alliance between two kingdoms when their princes are forced to marry against their will.

Princess Tania returns from modern London to a ruined Faerie court and, with her lover Edric, must battle the freed Sorcerer King of Lyonesse to rescue King Oberon and save both worlds.

Princess Gauri, taken captive by her own kingdom, partners with enemy prince Vikram to win the Tournament of Wishes and reclaim her throne, confronting perilous trials and the peril of their deepest desires.

After Princess Quinn leaves Mandria for Earth, Cam must now make the journey himself, seeking his own identity while she waits back home.

Beneath the shimmering, sunlit surface of the ocean there lives a race of rare and wondrous men and women. They have walked upon the land, but their true heritage is as beings of the sea. Now their people face a grave peril. And one woman holds the key to their survival... SHE WAS A SULTRY SIREN WITH AN UNDISCOVERED HERITAGE A scholar of sea lore, Meredith had come to the Greek island to follow her academic pursuits. But in one magical meeting she gazed into the mesmerizing blue eyes of a proud, determined warrior of the sea...and was eternally linked with a world far more elusive and mysteriously seductive than her own. For she alone possessed a scroll that held the secrets of his people. She alone was their only hope. And she alone would surrender to the powers of a love destined by the tides. HE WAS AN AZURE-EYED WARRIOR OF A LONG-FORGOTTEN RACE With eyes that told the stories of eternity, Galen lured this exquisite woman to join him in a battle for power beneath the sea. For now Galen's clan faces two enemies: Anastas, who wars against his own people, and a deadly unseen foe. He will cross into Meredith's world to choose her as a bold warrior for his people--and as his only love. He will share with her the secrets of a realm beyond time and imagining, and together they will emerge victorious as the keepers of its fate...or see its fragile beauty destroyed forever. Merfolk Trilogy: Across a Wine-Dark Sea (Merfolk Trilogy, #1) Dawn on a Jade Sea (Merfolk Trilogy, #2) Beneath a Sapphire Sea (Merfolk Trilogy, #3)

Dinah, a young queen of Wonderland, must confront betrayal, war, and the dark power rising from her past, as she balances love and fury to protect her kingdom.

Kiranmala, a twelve‑year‑old from Parsippany, New Jersey, is suddenly whisked into a magical world after her parents vanish and a rakkhosh demon appears. Amid winged horses, talking birds, and charming princes, she must uncover her parents’ fate and save the realm.

Two princesses from opposite worlds find themselves in an impossible situation: they must marry men who can offer power, but who don't know them and can't rule without their help.

A fifteen‑year‑old Mandrian princess, cast away from her world after a wish, must navigate life on Earth with no memory of her royal realm or a way back home.

Princess Amrita escapes an unwanted marriage and teams up with oracle Thala to uncover a mystical library that could turn their destinies around.

A changeling named Neef must retrieve the Magic Mirror to prevent the Mermaid Queen from turning New York Harbor’s freshwater into salt, a peril that could doom the city.