The Music of Dolphins by Karen Hesse
After rescuing an adolescent girl from the sea, researchers learn she has been raised by dolphins and attempt to rehabilitate her to the human world. At the age of four, Mila fell from a refugee craft and was lost in the ocean between Cuba and Florida. Until her rescue eight years later, she lived as a wild child of the sea. As Mila now learns to communicate and deal with the complexities of human feelings, she develops an understanding of a strange new world–and the human soul.