From the creator of PERCY JACKSON bestselling author Rick Riordan comes a brandnew adventure inspired by Jules Vernes Twenty Thousand Leagues Under the Sea. Ana Dakkar is a freshman at HardingPencroft Academy a fiveyear high school that graduates the best marine scientists naval warriors navigators and underwater explorers in the world. Anas parents died while on a scientific expedition two years ago and the only familys shes got left is her older brother Dev also a student at HP. Anas freshman year culminates with the classs weekend trial at sea the details of which have been kept secret. She only hopes she has what itll take to succeed. All her worries are blown out of the water when on the bus ride to the ship Ana and her schoolmates witness a terrible tragedy that will change the trajectory of their lives. But wait theres more. The professor accompanying them informs Ana that their rival school Land Institute and HardingPencroft have been fighting a cold war for a hundred and fifty years. But now the heat is on and the freshman are in danger of becoming fish food. In a race against deadly enemies Ana will make amazing friends and astounding discoveries about her heritage as she puts her leadership skills to the test for the first time. Rick Riordans trademark humour fastpaced action and wide cast of characters are on full display in this undersea adventure.Rick Riordan has now sold an incredible 180 million copies of his books worldwide.This is the stuff of legends The Guardian on Percy Jackson