El Nino

A new book by Pam Ryan! Kai Sosa comes from a long line of competitive swimmers. But recently, he's been haunted by a puzzling dream. One where he sees his dead sister, Cali, swimming in the Pacific Ocean surrounded by dolphins. Then he encounters a huge sea creature. When a school assignment about the weather phenomenon El Ni?o leads him to the local library, he finds a book that makes him doubt everything. What are the creature and the book trying to tell him?