Blue-Cloud addresses the "Future of Seas and Oceans Flagship Initiative". It aims at identifying long-term challenges and building a workflow to help researchers to better understand and manage the many aspects of ocean sustainability. The Aquaculture Monitor demonstrator focuses on detecting and monitoring aquaculture activities over predefined areas of interest using satellite imagery. The service provided is almost fully automatic and is already operational and fully integrated on a platform. This poster was presented at the Global Conference on Aquaculture in September 2021 #GCA2020 https://aquaculture2020.org/