In the fisheries sector, clusters form more of a patchwork: there is an important concentration of activity on the French and Spanish Atlantic coasts, and in northern Europe, in Norway and Scotland, but also in southern Italy and Portugal.
In earnáil an iascaigh, tá na braislí níos scaipthe: tá líon mór gníomhaíochtaí bailithe le chéile ar chósta Atlantach na Fraince agus na Spáinne, agus freisin sa tuaisceart, san Iorua nó in Albain, ach freisin i ndeisceart na hIodáile agus na Portaingéile.