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.

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?

Dive into the first two Mermaid Tales books—now available in one sparkling flip book edition! Third-grader Shelly Siren and her friends Echo, Kiki, and prima donna Pearl have just started school at the prestigious Trident Academy, where they get their sparkling tails tangled up in plenty of adventures. Join this fin-tastic foursome, along with other fantastical under-the-sea characters, as they navigate the waters of everyday life. This paperback bind-up includes Trouble at Trident Academy and Battle of the Best Friends.

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!

A Simon & Schuster eBook. Simon & Schuster has a great book for every reader.

Titles previously published individually in 2012 and 2013.

Kiki and her friends get caught up in a code war to try and meet a narwhal in this sparkling Mermaid Tales adventure. All the merkids are super-excited! Two famous narwhal scientists are visiting Trident City with their daughter, Nadine. Best of all, someone is going to get to show Nadine around the city while her parents are in meetings! But who? All the merkids want to be the one, so how are they going to decide who gets to do it? Mrs. Karp, their teacher, decides to organize a code-breaking contest, but with the competition getting fierce, it is more like a code war! Even Kiki, Echo, and Shelly are fighting! Is there a way that everyone can win?