This layer has been derived from the Aquaculture Resource Area, following work undertaken by ABPmer to refine the Aquaculture Resource Area to reflect technical constraints (e.g. water depth) and hard constraints (factors or activities, such as existing infrastructure, which would realistically prevent development). Welsh Government has then made further refinements to the area: to exclude areas further than 3 nautical miles from the mean high water mark; to remove areas overlapping with the Aggregates Refined Resource Area; and to remove any small, fragmented areas less than 2km2.