The report were prepared by DG MARE and Joint Research Center, and reflects that EU Blue Economy directly employed close to 5 million people and generated around €750 billion in turnover and €218 billion in gross value added in 2018.
The MINDeSEA project provided valuable contribution on marine aggregates and marine minerals. (e.g. page 74, 75).
For more info, see the press release The EU Blue Economy Report 2020.