You can find on this page relevant articles about the Blue Flag programme, as well as pictures you may use with appropriate copyright.
Blue Flag on the UNESCO's Green Citizens page
Blue Flag featured in Marina World magazine on pages 26-29, in a special 30th anniversary article alongside TransEurope Marinas
Blue Flag in the European Environment Agency bathing water quality report from 2017, page 15 of the report
Blue Flag pictures to use with the appropriate copyright for your own articles and needs