An empowering story from #1 New York Times bestseller and Newbery medalist Linda Sue Park starring a young snorkeling enthusiast who draws inspiration for fighting climate change from interacting with her pesty little brother Snorkeling is the best! Gracie loves floating above underwater reefs, watching colorful fish dart in and out of the coral. She convinces her parents to let her plan a family vacation to Roatán, Honduras, where they can snorkel together. She even makes a new friend there. Now, if only her irritating little brother would leave her alone, everything would be perfect. Things come to a screeching halt when Gracie hurts her leg, and all her carefully made plans start to come apart. Worse still, she learns the reef itself is in serious danger. Gracie wants to help the reef . . . but she’s just a kid. How can she possibly make a difference? Inspired by her own experience, Newbery medalist Linda Sue Park tells the engaging tale of a young girl learning how to impact a cause she cares about while navigating the ups and downs of sibling relationships and turning disappointment into opportunity.