This project initially developed MAR202, Marine Environmental Issues, a new core unit for the marine science degree in 2014 within a ‘flipped classroom’ model; a second phase of the project provided the means to evaluate and reflect on the first offering of the unit. In the newly developed unit, the traditional lecture format was replaced with interactive online activities and challenge-based workshops where students discussed and debated various marine issues through case studies on topics such as coastal erosion, marine pollutants and Aquaculture. The central aim was to utilise the flipped approach to provide improved opportunities for student engagement and for more active learning. Each week students completed pre-workshop online activities individually, with the assessment component being a Journal of Learning, a summary of understanding of the content for that topic. This blogging activity ensured they were prepared for the workshop and had clear expectations of what they needed to understand. Another innovative component of the unit included RSS feeds of each student's blog as well as the Twitter searches: #sealevelchange, #climatechange, #bluecarbon with students also being encouraged to create tweets about their reading and current news using the class hashtag #mar202.