A textbook on marine parasitology, this second edition takes into account recent advances and includes an additional chapter on the structure of marine parasite communities. There are also new sections on pollution, translocations of hosts and parasites and on the effects of parasites on the aquaculture of marine fish, molluscs and crustacea. The chapters covering ecological, zoogeographical and economic aspects have also been significantly changed. Aimed particularly at students and research workers in parasitology and marine biology, the book may also be of interest to ecologists, biologists concerned with zoogeographical problems and to aquaculturists, fish and fisheries biologists.