Peter J. Hayward DSc., FLS began his career as Scientific Assistant at the Natural History Museum, London, and retired as Senior Lecturer in Marine Biology at Swansea University. Marine invertebrates have been his abiding interest, through many spring and autumn field courses, and in practical laboratory exercises. He has published several books on marine biological topics, along with numerous scientific papers, especially on the marine Bryozoa. He has served as co-editor of the Journal of Natural History and editor of the Zoological Journal of the Linnean Society.