To show the diversity of experimental and environmental conditions of mesocosm experiments within Europe, eight commonly measured mesocosm parameters are visualised. These are: Electrical Conductivity, Oxygen Saturation, pH, Practical Salinity, Surface Temperature, TN (Total Nitrogen),TP (Total Phosphorus), and Total Chlorophyll-a. Query data from mesocosms by facility name (left panel), parameter (left panel) or location (map-based). Associated plots are automatically generated in the right panel and the map is updated to highlight the location of selected data in real time. Data can be viewed as monthly or daily timeseries using the buttons above the map (top left). Mesocosm information may be viewed clicking on the “Mesocosm Information” link above the plot (top right).