In this start to a new series starring Shelly the mermaid, a classroom conflict is no fun—even when school is 20,000 leagues under the sea. It’s MerGirl Shelly Siren’s first day at a new school, and she is nervous from the tip of her head to the end of her sparkling mermaid tail. How will she ever fit in at the prestigious Trident Academy? Everyone there is so smart and so pretty and so rich. At least she and her best friend, Echo, are in the same class, but so is Pearl, a spoiled know-it-all who only wants to make trouble for Shelly; Rocky, a MerBoy who loves to tease everyone; and Kiki, a shy MerGirl who’s new to Trident City. At first Shelly and Echo have lots of fun: eating lunch together, trying to make grumpy Mr. Fangtooth smile, and joining after-school clubs. But when Shelly and Echo have an argument about their very first school assignment, Pearl gets involved and makes matters worse. Will Shelly and Echo fix their friendship?

Pearl’s fear of sharks is not unfounded—but can she find a way to feel safe in this Mermaid Tales adventure? Late-breaking news from the Trident City Tide: There have been shark sightings in Trident City! No swimming alone! Pearl’s father even hires a Shark Guard to escort her to school. Pearl starts stirring up lots of trouble with anything that has to do with sharks, even denouncing the skeleton Kiki has in her room. And then, to make matters worse, Pearl accuses Kiki of stealing her precious pearl necklace! And though the undersea waters are indeed filled with danger, Pearl just might discover that true friends can provide a sense of safety!

Titles previously published individually in 2012 and 2013.

In this Mermaid Tales adventure, Shelly’s not sure she’s ready to be royalty. Not one of the merkids in Shelly Siren’s third grade class can believe the shell-shattering news: Shelly is a princess! A real princess! It’s been a deep, dark secret in Trident City, but now everyone knows—and Shelly doesn’t know how to act. Should she start wearing a glittery crown? Or move to a grand undersea palace? Will her friends have to call her Princess Shelly? She knows it’s an exciting turn of events, but Shelly’s not sure she can truly fit the royal part. Can she find a way to be a princess and stay herself?

The third sparkling adventure in the new mermaid series by Dadey. Illustrations.

Echo is excited to see her favorite band perform at a classmate's birthday party, but she cannot decide what to do when her best friend is not invited to the party.

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A young girl learns she’s half mermaid and plunges into a scheme to reunite with her father in this entrancing, satisfying tale that beckons readers far below the waves. For as long as she can remember, twelve-year-old Emily Windsnap has lived on a boat. And, oddly enough, for just as long, her mother has seemed anxious to keep Emily away from the water. But when Mom finally agrees to let her take swimming lessons, Emily makes a startling discovery — about her own identity, the mysterious father she’s never met, and the thrilling possibilities and perils shimmering deep below the water’s surface. With a sure sense of suspense and richly imaginative details, first-time author Liz Kessler lures us into a glorious undersea world where mermaids study shipwrecks at school and Neptune rules with an iron trident — an enchanting fantasy about family secrets, loyal friendship, and the convention-defying power of love.

Shelly Siren and Trident Academy’s Shell Wars team travel to the city of Atlantis for the championship game in this sparkling Mermaid Tales adventure. Shelly Siren loves playing on Trident Academy’s Shell Wars team. But is she ready to compete in the Shell Wars Championships in the fintastically famous city of Atlantis? She’s not sure, but luckily Echo, Kiki, and Pearl will be swimming along for the ride. As part of their trip, the mergirls get a tour of Atlantis, and learn all about how the great human city ended up at the bottom of the ocean. But when they swim through Poseidon’s Temple, Shelly spots a spookfish—which legend has it, carries a horrible curse. Shelly’s sure the curse is just a silly sea story. But after she knocks over a precious relic, accidentally hits Rocky with her Shell Wars stick, and gives another player a black eye, Shelly isn’t sure what to think. Could the Spookfish Curse be real? And will it ruin the chances of Trident Academy’s Shell Wars team taking home the championship trophy?

From Beatrice Blue, author of critically acclaimed Once Upon a Unicorn Horn, comes a beautiful, vibrant story about friendship and protecting our oceans. Theodore has a little boat and a big passion: collecting fish. He loves nothing more than discovering a new fish for his collection. But one day, he finds something he's never seen before: a tiny creature in a beautiful shell. Ignoring the voice that tells him to leave her alone, he takes her home and puts her in a tank, where she gets weaker and weaker. Can Theodore learn that the creature belongs in the ocean before it's too late? Drawn in bright yet soothing, whimsical mermaid colors, this is a bright and beautiful keepsake and a kind reminder to kids to let nature be and look after our oceans. It’s a dazzling and sparkling story of magic, friendship, and environmental conservation. This heartwarming story is the follow-up to the critically acclaimed and best-selling Once Upon A Unicorn Horn and Once Upon a Dragon's Fire.