standard here it s up well north sea place docks are stable but there s more to certification than that the fishery is not supposed to use methods that damage the ocean ecosystem but the eco fish vessels also use dragnets like these which are controversial. dr one hundred floors and he s from the geo mar ocean research center in kiel germany. the marine biologist supported the m.s.c. for years but then he studied one hundred thirty certified fisheries and discovered that one third of the stocks were overfished and many used harmful fishing methods like bottom trawling. and you get. there is some areas where bottom trolling is prohibited like in the baltic sea the seabed looks completely different.