Did you know that oceans cover 71 percent of our planet and contain 97 percent of earth's water? That seven out of every ten breaths you take contain oxygen that comes from oceanic plant life? No matter how far from the ocean you live, it is part of your life—and you are part of the ocean's life, too. In this book by the creators of A Hundred Billion Trillion Stars, Seth Fishman explains these mindboggling concepts for readers 4 to 8, while Isabel Greenberg visualizes them in her wonderfully quirky cartoons.