Peter J. Hayward DSc., FLS was formerly Senior Lecturer in marine biology at Swansea University. He is editor, co-author or author of many books on marine biology, including the Handbook of the Marine Fauna of North-West Europe, New Naturalist volume 94 Seashore and the Collins Pocket Guide to the Sea Shore of Britain and Northern Europe. He has published around 100 papers on the marine Bryozoa, which are his particular research interest. He has served as zoological editor of the Journal of Natural History and the Zoological Journal of the Linnean Society, and is co-editor of the Linnean Society Synopses of the British Fauna.