The bestselling series that began with Tree: A Peek-Through Picture Book now adds an elaborate and beautiful board book with peek-through holes that show the amazing life in the world's oceans.

Discover a world teeming with life beneath the waves, with graceful sea horses, darting tropical fish, electric eels, and humpback whales. A colorful array of sea creatures is brought to life by award-winning illustrator Britta Teckentrup in this innovative board book, with peek-through holes that reveal details of life in the ocean with each turn of the page.

It's the perfect light nonfiction book for young readers curious about the world around them. And it will spark conversations about the importance of keeping our oceans clean and protecting the amazing creatures who live there.