Once again Abby and her brother Jonah go through the magic mirror in their basement, and this time they find themselves interfering in the Little Mermaid story--and needing to set things right and make sure everyone has a happy ending.

On her seventeenth birthday, Tempest must decide whether to remain a human and live on land or submit to her mermaid half, like her mother before her, and enter into a long-running war under the sea.

As they search for their missing father near their Cornwall home, Sapphy and her brother Conor learn about their family's connection to the domains of air and of water.

Marina and her friends find themselves stranded in a strange jungle when the magic whirlpool malfunctions. How will they get back home?

Wanting to help a lost baby polar bear return home, Kiki Coral and her mermaid friends worry that the cost of the bear's transportation will prevent them from seeing a concert performance of their favorite boy band.

Racing to bring the magic crystals to the Coral Kingdom, the six young mermaids discover a dolphin trapped in a fisherman's net, thanks to the evil Mantora, and Sophie, the fastest swimmer, rushes off to find help.

"Tallulah the mermaid realizes that she is different from the other mermaids in the ocean and finds that she truly belongs in the Great Lakes"--

A young mermaid falls in love with a prince. A sea witch gives her a potion to make her human, but the prince has to fall in love with her, too.

Sweet, awkward sixteen-year-old Ruby Gillman is desperate to fit in at Oceanside High, but she mostly just feels invisible. She's math-tutoring her skater-boy crush, who only seems to admire her for her fractals, and she's prevented from hanging out with the cool kids at the beach because her over-protective supermom, has forbade Ruby from ever getting in the water. But when she breaks her mom's #1 rule, Ruby will discover that she is a direct descendant...