1. Physical Processes in Inverse Estuarine Systems Mohammed I El-Sabh, Than H. Augn and Tad S. Murty 2. Light Absorption by Phytoplankton and the Vertical Light Attenuation: Ecological and Physiological Significance F. Schanz, P. Senn and Z. Dubinsky3. Lingulodinium Polyedrum (Gonyaulux Polyedra) a Blooming Dinoflagellate Jane Lewis and Richard Hallett 4. The Role of Tidal Marshes in the Ecology of Estuarine Nekton R.T. Kneib 5. The Hyperbenthos Jan Mees and Malcolm B. Jones 6. Dormancy in the FreeLiving Copepod Orders Cyclopoida, Calanoida and Harpacticoida Judith Williams-Howze 7. Polychaete Reproductive Patterns, Life-Cycles and Life-Histories: An Overview Adriana Giangrande 8. Caloric Values of Marine Invertebrates with an Emphasis on the SoftParts of Marine Bivalves Jan Beukema 9. The Hellenic Seas - Physics, Chemistry, Biology and Fisheries, K.I. Stergiou, E.D. Christou, D. Georgopoulos, A. Zenetos, C. Souvermezoglou H. Augn, Flinders University of South Australia, Australia, Tad S. Murty,W. F. Baird & Associates Coastal Engineers Ltd, Canada, F. Schanz, Limnological Association, Switzerland, P. Senn, Limnological Association, Switzerland, Z. Dubinsky, Bar-Ilan University, Israel, Jane Lewis, University of Westminster, UK, Richard Hallett,University of Westminster, UK, R.T. Kneib, University of Georgia Marine Institute, USA, Jan Mees, University of Gent, Belgium, Malcolm B. Jones, University of Plymouth, UK, Judith Williams-Howze, University of South Carolina, USA, Adriana Giangrande,University of Lecce, Italy, Jan Beukema, Netherlands Institute for Sea Research, Netherlands, K.I. Stergiou, Aristotle University of Thessaloniki, Greece, E.D. Christou, National Centre for Marine Research, Greece, D. Georgopoulos, National Centre forMarine Research, Greece, A. Zenetos, National Centre for Marine Research, Greece, C. Souvermezoglou, National Centre for Marine Research, Greece