The Australian Marine Science Association appreciates the assistance of a large number of individuals, companies and institutions in preparing this booklet. Principal writers and/or co-ordinators, many of whom supplied photographs, were J. Baker, A. Bremner, A. Butler, H. Campbell, T. Christie, N. Exon, A. Gabric, M. Gourlay, J. Green, G. Hill, P. Hutchings, J. Jell, C. Johnson, I. Jones, R. Kenchington, R. King, R. Lester, D. Mackey, H. McCallum, J. Middleton, R. Morton, T. Pickford, N. Preston, D. Sutton, I. Tibbetts, and J. Young. Others who contributed to writing, provided photographs, or who were otherwise consulted were the Australian Institute of Marine Science, D. Alongi, Bureau of Resource Sciences, K. Black, R. Black, K. Brandon, D. Campbell, J. Carson, CSIRO Division of Fisheries, M. Cuthill, C. Dobson, D. Evans, M. Garson, P. Gesner, C. Glasby, J. Greenwood, D. Gwyther, C. Jenkins, M. Johnson, B. Kaufmann, Lamont Studios, R. Lindner, T. McDougal, K. McGuiness, A. McIlgorm, B. Munday, P. Murphy, D. Neil, G. Newton, L. Owens, G. Poore, I. Price, Queensland Department of Environment and Heritage, Queensland Museum, M. Read, D. Robinson, Shellfish Culture Industries Pty Ltd, A. Short, J. Slater, M. Staniforth, P. Steinberg, J. Stoddart, B. Thomas, R. Tilbury, J. Tonkin, Townsville Port Authority, D. Walker, S. Williams, R. Wilson, C. Woodroffe, and D. Yellowlees, L. Zell. The editors are grateful to the other committee members for their assistance with the project (J. Greenwood, R. Pitcher, P. Rothlisberg, I. Tibbets), and also to I. Tibbets, N. Hall, and S. Davies of the School of Marine Science at the University of Queensland for help with production aspects.