What is CleanSeaNet? Where does EMSA obtain its images of ship-sourced pollution in European waters?

CleanSeaNet, a satellite based system, identifies and monitors pollution at sea. It uses a small number of remote sensing satellites belonging to the European Space Agency (ESA) that take snapshots of different sea areas in response to request from Member States. The images are collected by EMSA and interpreted by experts to see whether there is any likely pollution.