Egmond aan Zee vroeger en nu

An overview is given of molluscs, found on the beach of Egmond aan Zee, the Netherlands, in the years 1976-1985. A comparison is made with the years 1994-1997. Several species were not found alive (Ensis arcuatus, Ensis ensis phaxoides, Ensis minor, Cerastoderma edule, Mya arenaria, Mya truncata, Mactra corallina cinerea and petricola pholadiformis). Other species are new ( Ensis americanus, Crassostrea angulata/gigas) or were found again after a period of several years ( Venerupis senegalensis, Spisula solida Also the beach-deposited material has changed over the years.