An educational package based on the Messolongi wetland area and designed to develop environmental awareness amongst Greek secondary students is described. The package includes a book and a pedagogical guide for the teacher, as well as a hypermedia application/CD-ROM and worksheets for the student. The entire educational package combines recent scientific knowledge about wetlands with new technologies. It introduces students to wetland ecosystems and specifically to the Messolongi wetlands as, due to their complexity, they can provide a starting point for understanding these ecosystems. (Contains 8 figures and 2 tables.)