Once upon a time, at the bottom of the sea, there were many colorful fish. These little fish lived happily, swimming and playing all together among the crystalline reflections of the sea water. 

Hello friends! I am Nero. I wanted to tell you that we are in danger! The black stream is coming full of horrible and smelly objects. The water of this current is dark and dark and makes everything in its path turn black.

One day, however, a completely black fish, named Nero, came against them, and the news it was bringing was certainly not good!

In the blink of an eye, they all turned into anonymous little black fish, what a disaster! Nero, brave as ever, went to the surface and what he saw was crazy: a tube that threw a huge amount of filthy, thick and black liquid into the water.

While Nero was trying to figure out how to stop this water, suddenly a truck arrived near the shore and threw a mountain of waste into the water! 

Meanwhile, near the shore, a family was having a picnic and Nero watched them for a while until, having had their snack, the family threw all the rubbish into the water. The little fish Nero, not happy with their behavior, scolded them! 

Hello Nero. It is true we have been uncivilized. It is not correct to throw litter into the sea. Now we collect them and throw them in the appropriate bins.

Hey you! My name is Nero. I saw you throwing garbage in my house. Yes, because the sea is not only my home but also of all my friends. This is absolutely not fair behavior on your part!

After that Nero plunged back into the black current and went down to the bottom of the sea to his little fish friends. He told him what he had seen and they all decided to go up to the surface and got busy. With a stone they plugged the hole from which the black water was leaking and so he stopped spitting its disgusting liquid, then gathered the objects thrown off the truck on the shore.

In a short time the water returned clear and all the fish resumed their peaceful and joyful days. From this bad experience they understood that: 1) from Nero they learned that one must have respect for other spaces; 2) unity is strength!