Cool story about Iris, a deaf girl named after a whale. Iris has strong tech skills (she repairs antique radios for pocket money) but she’s main streamed in a school with no deaf students and feels frustration at being alone. Then she learns about a whale (Blue 55) who communicates in a different frequency from other whales (this portion of the story is based on a real whale). Compelling writing, interesting complex characters and a wonderful arc for our heroine — and her grandmother! Lynne Kelly has been an ASL interpreter for 20 years so I am hoping she’s portraying Iris and her grandmother with authenticity. The portions of the book about marine science and acoustic biology were fascinating and fun.