This tool will visualise data collected during surveys and research cruises with the RV Cefas Endeavour focusing on chlorophyll a and phytoplankton functional types. It will make the link between the in-situ measurement and the Earth Observation and modelling and will develop the combined data set approach for the descriptors 1, 4, and 5 for MSFD. Primarily, developed in R shiny, with a tab for exploring each dataset, and a front page where datasets can be visualised concurrently, the tool will propose products using the outputs from the different approaches and will be included in the products and services Cefas portfolio.