Maya and her parents visit the beach, but Maya is too shy to say hello to the other children playing on the beach. Maya falls asleep and dreams that she has been transported to a magical underwater world. As she plays with the sea creatures, she discovers that she has a mermaid tail. Maya is woken up by a greeting from Pearl, another girl on the beach, and Maya learns that making new friends may not be as hard as she thought.

"When Kenzie slips on her mermaid tail, she becomes Mermaid Kenzie, protector of the deeps. One day as Kenzie snorkels around a shipwreck, she discovers more plastic bags than fish. Grabbing her spear and mermaid net, she begins to clean up the water and the shore--inspiring other kids to help"-- Provided by publisher

While spending the day at the beach, Daisy's imaginary friend Posey turns her into a mermaid and they help a lost octopus reunite with her friends.

When mermaid Vera and Octo-boy Beaker investigate what seems like a wave of vandalism in Tidal Grove, they discover a baby Mantis shrimp who does not fully understand his own power, and help him find his family.

Mermaids Shelly and Echo are excited to begin third grade at the prestigious Trident Academy, but snooty Pearl, jokester Rocky, brilliant Kiki, grumpy Mr. Fangtooth, and an argument over their first project challenge the best friends. Includes facts about marine plants and animals and words to the Mermaid Tales Song.

Itty must figure out why the mermaids of Lollyland have stopped singing.

"When Oliver's explorer parents go missing, he sets sail on the rescue mission with some new, unexpected friends"-- Provided by publisher.

Two years after their adventures in The Land of the Silver Apples, the apprentice bard Jack and his Viking companion Thorgil confront the malevolent spirit of a vengeful mermaid and begin a quest that casts them among the fin folk of Notland.

Oona loves to share her inventions with her friends. They're big and bold and LOUD--just like her! But there's one underwater creature who doesn't seem to enjoy Oona's company, or her creations. Stanley the shark! He doesn't care for her squeaky unicorn. And he's far too busy for the Sea Horse Carousel. And oh GOODNESS! Oona's latest hopping, chopping, and popping inventions just make him angry. Oona may not know what Stanley likes, but she does know...

"A little girl, tired of a mundane life in her seaside home, finds adventure and friendship with a mermaid who shows her the beauty of the ocean depths. But it's only after exploring the harmonious beauty of the sea, we are reminded that coming home can be the greatest adventure of all." -- Provided by publisher.