The octopus is an amazing invertebrate.  Large, plain text tells: the kind of animal they are, where they live, about their unusual bodies, ways they camouflage themselves, and ways they learn.  Scientists gather many varieties of octopuses to study their abilities.  Since the parents die when eggs hatch, they do not teach their young.  Scientists hope to find out how octopuses learn and solve problems.  Many inventions have been inspired by the octopus – suction cups for diverse uses, for example.  Diagrams show external body parts and the location of the brains and hearts.  Clear photographs are well captioned.  Many pages contain extra sidebars with facts.  Glossary, index, resources, and websites included.