Octopus Ocean: Geniuses of the Deep (Orca Wild) Ages 9-12Ages 9 12. Part of the nonfiction Orca Wild series for middle grade readers and illustrated with color photographs throughout, this book introduces kids to octopuses all over the world. It discusses octopus habitat, biology and threats to survival, and how scientists, conservationists and young people are working to protect octopuses everywhere. 104 pages hc