This little mermaid has some outsized ambitions that are tempered with reality, ocean style.Lana, a 14-year-old half-mermaid, half-human princess, is unexpectedly appointed by her father, King Carrack of Clarion, to be an ambassador of his underwater kingdom. Lana is required to attend the Royal Festival, an important political gathering that takes place on the land above her ocean home. Her younger brother, Aarav, is delighted she is attending, and together, they make the transition to land. This involves growing legs-something that happens easily and instantly due to their human heritage-and reconnecting with their mother, Princess Hyacinth, with whom Lana has a distant, difficult relationship. This is further complicated by the appearance of her mother's new boyfriend, King Petyr. The plot thickens when Lana's new status as ambassador is denied, seemingly by her mother. Once she's been on land for 10 days, Lana discovers her disturbing ability to read other people's minds. A natural disaster in her underwater home challenges Lana's natural leadership talents, and she heads back to the ocean underworld, but, increasingly aware of her political influence, Lana returns to her grandparents' earthly palace, determined to reconcile with her mother and Petyr. The story reinforces the idea that you really can learn from your mother, however impossible that may seem-and, awkwardness aside, mind-reading can be fun. Main characters default to White; Lana has twin friends with Japanese names.A lighthearted adventure. (Fiction. 10-14)