Your belly is full of tiny creatures. Along the river of your gut, tiny creatures move, eat, and grow. Learn more about the garden of microscopic flora growing inside the body and come on a journey that explains an important biological concept: the microbiome, the health of which affects everything in our bodies. Striking, original watercolor illustrations keep things from getting too gross. Informational back matter goes further into the science of the microbiome and reveals amazing facts about the gut.