The COBWEB Project is a 4-year research project that aims to explore how crowdsourced environmental data from citizen science projects can be made interoperable and reusable across projects and data infrastructures. It will develop mobile applications to collect and analyze crowdsourced data on the environment from biosphere reserves in the UK, Germany, and Greece to support decision making. The project is currently in its 16th month of the 48 month duration and working to implement its data platform and develop its first demonstrator in Wales by the next milestone.