This comical and heartfelt picture book is a winning celebration of invention, creativity, and friendship. With gorgeous underwater scenes and a crowd-pleasing tale, this is one little mermaid who is here to make a splash!

New York Times bestselling author Kelly DiPucchio and Coretta Scott King Illustrator Award winner Raissa Figueroa would like to introduce Oona?the big wide sea's littlest mischief-maker.

Oona and her best friend Otto love to search for treasure...and often find trouble instead.

Messy trouble.

Tricky trouble.

Even shark-related trouble.

That's never stopped them before, though!

After all, no proper treasure hunt is without some adventure. But when the grandest treasure yet is stuck in a deep, dark rift, Oona's not sure if she can dive right in. What might be waiting for her in those unknown waters?

Kelly DiPucchio is the New York Times bestselling author of many beloved books for children, including Grace for President, Dragon Was Terrible, and Oona, illustrated by Raissa Figueroa. As a little girl Kelly wanted a pet otter but settled for a pet goat instead. When she's not writing, Kelly loves to search for treasure and mermaids in Michigan's Great Lakes. Land friends can visit her online at kellydipucchio.com.