This Etwinning project shares the title and the objectives of the Erasmus+ Ka229 project ‘Aquatic Environment and Cultural&Natural Heritage’, to which is linked. The project aims to promote awareness of the close relationship between the environment and the development of society. The participants will discover the importance of the human action and of an environmentally conscious attitude for the safeguard of the natural and cultural heritage. Three secondary schools of different countries, Italy, Greece and Romania are involved. The Etwinning project will allow a better collaboration among students and teachers participating to the project and will be a powerful tool for the dissemination of the project results. Furthermore, thanks to the Etwinning project not only the participants to the LTT activities will be actively involved but all teachers and students eager to deepen the topic of the project have the opportunity of collaborating and sharing their findings on the platform.