Where is an octopus's mouth? How do octopuses hide from other sea creatures? What do their babies look like? This book has the answers to these questions and many more, along with photographs, step-by-step illustrations, simple text and links to websites with video clips and activities.

Chapters in this book include:
- Where do they live?
- All arms
- Jet-powered swimmers
- A tight squeeze
- Hunting for food
- Time to eat
- Octopus eggs
- Baby octopuses
- Blending in
- Masters of disguise
- Octopus tools
- Octopus against octopus
- Keep back!
- Down in the deep