A novel-in-verse about a 12-year-old Dominican American girl who must keep her love of swimming a secret from her mother, is diagnosed with Juvenile Arthritis, and is forced to reimagine the person she is to become.

"Aniana del Mar pertenece al agua como un delfín al océano, pero mantiene en secreto sus clases de natación. Hace años, a su mamá se le ahogó un ser querido y no se ha recuperado de la pérdida. Un día, la artritis juvenil obliga a Aniana a guardar reposo. Entonces confiesa lo importante que es para ella nadar y, aunque el doctor cree que la natación puede ayudarla a mejorar, su mamá lo prohíbe. Esta es la historia de una niña que debe crecer como las mareas para encontrar su fuerza y defender lo que ama"-- "Aniana del Mar belongs in the water like a dolphin belongs to the sea. But she and Papi keep her swim practices and meets hidden from Mami, who has never recovered from losing someone she loves to the water years ago. That is, until the day Ani's stiffness and swollen joints mean she can no longer get out of bed, and Ani is forced to reveal just how important swimming is to her. Mami forbids her from returning to the water, but Ani and her doctor believe that swimming along with medication will help Ani manage her disease. What follows is the journey of a girl who must grieve who she once was in order to rise like the tide and become the young woman she is meant to be. Aniana Del Mar Jumps In is a poignant story about chronic illness and disability, the secrets between mothers and daughters, the harm we do to the ones we love the most--and all the triumphs, big and small, that keep us afloat"--