Readers are introduced to the fascinating biology of the octopus, from its 3 hearts and 9 brains to suction cups and how they work, and learn all about what it’s like to be an octopus: how they use camouflage and ink, what they eat, and how they reproduce (nests and eggs!). The book also explores the intelligence and playfulness of this animal—and, of course, the famous stories of octopuses who escaped their tanks. Readers will meet 13 different species of octopuses and find out what makes them unique, from the most venomous and best disguised to the deepest and coldest. They'll also get a glimpse into exciting octopus research, technology inspired by octopuses, and ways to help conserve our oceans.