The dataset provides information about the location of seawater finfish farms. There is an obligation for MS to inventory all authorized aquaculture sites under the Council Directive 2006/88/EC on animal health requirements. Despite this obligation, the availability of data varies significantly among MS from no data available at all to a complete regularly updated dataset (only found in Scotland). Most MS with only a marginal finfish production are not able to provide a list with the geolacation of farms. In the main producer countries, there is usually a public list of authorized farms with geolocation data and sometimes information on the species. Data is provided here for Cyprus, Denmark, Greece, Ireland, Finland, Spain and the UK. There are no sea-based finfish farms in Belgium, Bulgaria, Latvia, Lithuania, the Netherlands and Poland. There is a significant production in Italy and marginal productions in other MS but they were not able to provide geolocation data.