The heroes of this book are cephalopods. These are squid, cuttlefish, octopus and nautilus. They have a very complex brain, excellent memory and excellent learning ability, fantastically fast digestion and a growth rate that no fish can compare with! Plus the ability to instantly change the color and structure of the body surface, take on bizarre images, and camouflage in the light to match any background. How do they reproduce? What is their lifestyle like? Who do they eat and who eats them? If you are interested, open the book. And you can start and stop reading from anywhere you want!