For further info about Polydora hermaphroditica, you can also look up this species under: Polydora hermaphroditica (species group: Macrobenthos of the North Sea - Polychaeta) You can continue searching for Polydora hermaphroditica on one of these Web sites: Catalogue of Life | GBIFFauna Europaea (animals) | IOPI (plants) | NCBI (genetic) |