After their magical underwater city grows dim and their fellow merpeople mysteriously fall ill, two siblings must race to find a cure.
A mysterious illness has settled over the underwater city of Merantida, and among the sickest is Princess Adi. To save Adi and restore the glow to the city, siblings Cander and Nuly will have to put their own lives at risk.
Readers practice the phonics skills of prefixes, suffixes, and root words.
