To observe, feel, meet and understand. When we are in contact with nature, we feel renewed and we reinforce our sense of belonging in the biosphere. Today, on global, international, national, territorial and local levels, biodiversity has become a societal issue that citizens must be fully informed about so they can freely decide on the direction that they wish to take for themselves and for future generations. Environmental education is at the heart of the issues surrounding biodiversity. A topic relevant in today's society and in the future, education in biodiversity is essential nowadays and it is highly important to develop educational techniques in order to reconcile certain citizens with nature and to reinforce our ability to act together towards biodiversity. In addition, it appears essential to participate as a citizen and to train those who will become the catalysts of success in this domain. This seminar fits into this context in order to facilitate the mobilisation and training of participants on a European level. The aim of this seminar is to connect the participants from the sector of environmental education and sustainable development from different European countries in order to: - Convey, experiment, innovate, share ; - Promote and enrich teaching thoughts and actions about education in biodiversity ; - Allow the European actors of the environmental education sector to cross-analyse ; - Become trained in a teaching method: the teaching method of the project ; - Promote the dynamic of the project between participants. The project will host 20 participants coming from five different countries : France, Grece, Czech Republic, Italy and Spain.