The dynamic identification of essential fish habitat by the Joint Research Centre of the European Commission contributes to the protection of fish stock recovery areas (Article 8 of the Common Fisheries Policy, CFP). Habitat analysis showed that marine predators are attracted by productive fronts for feeding (chlorophyll-a fronts). These studies used the Copernicus Marine Service products of satellite ocean colour and hydrodynamic models to daily map favourable feeding habitats of important species such as hake, Atlantic bluefin tuna, skipjack tuna, fin whale and blue shark. These habitat products are useful as a decision tool for fisheries closure, by-catch reduction and improvement of fish stock estimates. Essential habitats of marine species are also key information for research on full ecosystem modelling and animal behavior analysis. Jean-Noël Druon from the JRC says "Copernicus Marine Service ocean models provide crucial data of suitable quality for our fish habitat model allowing identification both at decadal and real-time time scales. They are major inputs to build robust operational ecology products to sustain the fisheries sector".