In February 2013, the Dutch oyster fishery in the Grevelingen and Oosterschelde estuaries became MSCMSC:
Marine Stewardship Council, an independent, international non-profit organization that has developed an eco-label that guarantees well-managed, sustainable fisheries. Fish products that meet the criteria of the eco-label can be identified by the blue MSC logo.-certified. Despite the fact that these oysters are farmed, they received MSC certification because the farming process takes place in a completely natural and uncontrolled state. These oyster fisheries were certified after a team of scientists determined that there is no overfishing during the fishing and farming process and limited environmental impact. Since 2017, the oyster fishery in Limfjorden, Denmark, has also been MSC-certified. MSC-certified flat oysters are farmed in bottom cultureBottom culture:
The cultivation of shellfish on shallow banks in the sea. Bottom cultivation is used to grow mussels and oysters. Due to the natural food supply in the sea, the seed of the shellfish develops into shellfish suitable for consumption..