We all know the negative effects of pollution in general. Pollution of the world's water and oceans is a serious problem, more and more often to be under discussion. Themes such as global warming, the melting of the ice cap, the rise in the level of the world's seas and oceans, the threat of the extinction of certain species of plants and animals, desertification, the deterioration of the climatic conditions of life in certain areas of the globe have been intensively discussed and questions have been addressed to the highest political and economic level. The education system has the duty to raise young people aware of these acute problems so that they would be capable of finding solutions for the future.

           In all the mobilities carried out, we learned with joy that there are efficient systems for capturing and purifying natural water to be used for consumption and, at the same time, systems for collecting and recycling household and industrial water so that it can be reintroduced into the natural circuit afterwards.

             In all the thematic visits related to water within the project, we saw how many forms water can take in nature and how important water is as a fundamental element of life, how beautiful the whole nature can be - the Blue Planet - with water that we are obliged to keep it clean, full of life and providing energy worldwide.