On the night of the blue moon when mermaids are said to gather on a sandbar in the Gulf of Mexico, ten-year-old Keeper sets out in a small boat, with her dog BD and a seagull named Captain, determined to find her mother, a mermaid, as Keeper has always believed, who left long ago to return to the sea.

Emily Windsnap doesn't know how to swim. Her mother has always cautioned her to stay out of the water. But it's hard to make friends at the beach when everyone else is having fun in the waves! So when swimming lessons start at school, Emily is excited to finally have the chance to learn. Standing beside the pool, she feels the water calling her, but when she jumps in, she gets a strange, kind of scary sensation... like her legs are stuck together....

When Emily makes a wish on a magic stone, she gets a glimpse of what the future holds -- and it's a disaster! She tries to make things right, but each trip through time takes Emily to a future where things turn out badly for either the humans of Brightport or the merpeople of Shiprock. Plastic pollutes the ocean, garbage overflows the landfills, and the two towns are no longer getting along. Emily realizes she can't save her hometown and the ocean...

A girl and a mermaid become best friends as they figure out how to enjoy their favorite things together, but when the shore becomes unsafe Mermaid must leave, promising to return.

In this new chapter book series featuring the mermaids of Mermaids Rock, when Coralie finds a mysterious treasure map in a kelp forest, she and her friends can't wait to explore. But the forest has been destroyed! They'll have to do everything they can to save the forest creatures before it's too late.... Coralie is overjoyed when she visits a beautiful kelp forest with her pet dolphin, Dash. She meets adorable sea lions and otters, and she even finds...

Amber leads her fellow mermaids in trying to help beluga whales that are trapped in ice, while working on solving a riddle from evil Mantora, whose theft of the Snow Diamonds may cause the Ice Kingdom to melt.

Vera the mermaid and her half-octopus friend Beaker meet three friendly krakens on a field tip.

Mermicorns Sirena and Lily are best friends at the Magic Academy, but when Sirena wants to invite her kitten friends to the club, Lily gets jealous.

Bubble Puppy must return a magical ring to its owner.