Fig. 2From: Do Lanice conchilega (sandmason) aggregations classify as reefs? Quantifying habitat modifying effectsLocation of the Belgian part of the North Sea (above left); location of the Flemish beach nature reserve Bay of Heist (above right); and location of beach area with high density aggregations of Lanice conchilega. Indication of the 11 aggregations that were studied (below right)Back to article page