Includes bibliographical references and index.

Introduction / S.A. Wainwright -- The nature of flow and the reaction of benthic Cnidaria to it / S.A. Wainwright and M.A.R. Koehl -- Mechanical design in sea anemones / M.A.R. Koehl -- Hydroid skeletons and fluid flow / Gordon R. Murdock -- The orientation of Aglaophenia fans to current, in laboratory conditions (Hydrozoa, Coelenterata) / Armin Svoboda -- Competitive interactions and the species diversity of corals / J.H. Connell -- Habitat-related patterns of productivity of the foliaceous reef coral, Pavona praetorta Dana / David S. Wethey and James W. Porter -- The ecology of Caribbean sea anemones in Panama : utilization of space on a coral reef / Kenneth P. Sebens -- Growth interactions among morphological variants of the coral Acropora palifera / D.C. Potts -- Settlement, mortality and recruitment of a Red Sea scleractinian coral population / Y. Loya -- Intraspecific variability of zooplankton feeding in the hermatypic coral Montastrea cavernosa / Howard R. Lasker -- Accumulation of dissolved carbon by the solitary coral Banalophyllia elegans -- an alternative nutritional pathway? / Peter V. Fankboner -- Regulation of frequency of pedal laceration in a sea anemone / Nathan Smith III and Howard M. Lenhoff -- The acrorhagial response in Anthopleura krebsi : intraspecific and interspecific recognition / Charles H. Bigger -- Ecological physiology and genetics of the colonizing actinian Haliplanella luciae / J. Malcolm Shick -- Nutrition expérimentale chez les Cérianthaires / Yves Tiffon -- Fouling community structure : effects of the hydroid, Obelia dichotoma, on larval recruitment / Jon D. Standing -- The zonation of hydroids along salinity gradients in South Carolina estuaries / Dale R. Calder -- Responses of Hydra oligactis to temperature and feeding rate / Barbara Hecker and Lawrence B. Slobodkin -- A large-scale experiment on the growth and predation potential of ctenophore populations / M.R. Reeve and M.A. Walter -- Nutritional ecology of Agalma okeni (Siphonophora: Physonectae) / Douglas C. Biggs -- Behaviour of planktonic coelenterates in temperature and salinity discontinuity layers / Mary Needler Arai -- Craspedacusta sowerbii : an analysis of an introduced species / Thomas S. Acker -- Life history of Carybdea alata Reynaud, 1830 (Cubomedusae) / A. Charles Arneson and Charles E. Cutress -- Cubomedusae : feeding -- functional morphology, behaviour and phylogenetic position / R.J. Larson -- An edwardsiid larva parasitic in Mnemiopsis / Sears Crowell -- Towards a theory of speciation in Beroe / Wulf Greve, John Stockner, and John Fulton -- Sea anemone reproduction : patterns and adaptive radiations / Fu-Shiang Chia -- Reproduction of some common Hawaiian reef corals / John S. Stimson -- Reproduction, growth and some tolerances of Zoanthus pacificus and Palythoa vestitus in Kaneohe Bay, Hawaii / William J. Cooke -- Characteristics of asexual reproduction in the sea anemone, Haliplanella luciae (Verrill), reared in the laboratory / Leo L. Minasian Jr. -- Some observations on sexual reproduction in Tubularia / Richard L. Miller -- The structure and function of centriolar satellites and pericentriolar processes in cnidarian sperm / Maurice G. Kleve and Wallis H. Clark Jr. -- Early development and planula movement in Haliclystus (Scyphozoa: Stauromedusae) / Joann J. Otto -- Larval dispersal in the subtidal hydrocoral Allopora californica Verrill (1866) / Georgiandra Little Ostarello -- Larval adhesion. releasing stimuli and metamorphosis / W.A. Mèuller, F. Wieker and R. Eiben -- Some microenvironmental influences on attachment behavior of the planula of Cyanea capillata (Cnidaria: Scyphozoa) / Robert H. Brewer -- A new type of larval development in the Actinaria : giant larvae. Morphological and ecological aspects of larval development in Actinostola spetsbergensis / Karin Riemann-Zèurneck -- Stolon vs. hydranth determination in Pennaria tiarella planulae : a role for DNA synthesis / Georgia E. Lesh-Laurie -- SEM studies of strobilating Aurelia / Dorothy B. Spangenberg and William Kuenning -- The quantitative analysis of the hydra-hydramoeba host-parasite system / Alan E. Stiven -- Aspects of light in the biology of green hydra / R.L. Pardy -- Survival during starvation of symbiotic, aposymbiotic and non-symbiotic hydra / Marcia Ornsby Kelty and Clayton B. Cook -- Sulfate utilization in green hydra / Clayton B. Cook -- Specificity of symbioses between marine cnidarians and zooxanthellae / D.A. Schoenberg and R.K. Trench -- Macromolecular mimicry : substances released by sea anemones and their role in the protection of anemone fishes / Dietrich Schlichter -- Aposematic coloration and mutualism in sponge-dwelling tropical zoanthids / David A. West -- Skeletal modification by a polychaete annelid in some scleractinian corals / R.H. Randall and L.G. Eldredge -- The association of hydractiniid hydroids and hermit crabs, with new observations from north Florida / Claudia E. Mills -- Locomotion in sea anemones : the pedal disk / Elaine A. Robson -- Reflections on transparency / Garth Chapman -- A qualitative and quantitative inventory of nervous cells in Hydra attenuata Pall. / Pierre Tardent and Christian Weber -- Evidence for neural control of muscles in ctenophores / Mari-Luz Hernandez-Nicaise -- The organization of the neuro-muscular system of the Diadumene acontium / Tuneyo Wada -- Ultrastructure and attachment of the basal disk of Haliclystus / C.L. Singla -- The ultrastructure of the muscle system of Stomphia coccinea / H.M. Amerongen and D.J. Peteya -- Increase in nematocyst and spirocyst discharge in a sea anemone in response to mechanical stimulation / Edwin J. Conklin and Richard N. Mariscal -- A comparison of putative sensory receptors associated with nematocysts in an anthozoan and a scyphozoan / Richard N. Mariscal and Charles H. Bigger -- A view of the evolution of chemoreceptors based on research with cnidarians / Howard M. Lenhoff, Wyrta Heagy and Jean Danner -- Chemoreception and conduction systems in sea anemones / I.D. Lawn -- Interactions between conducting systems in the sea anemone Calliactis parasitica / I.D. McFarlane and A.J. Jackson -- Slow conduction in solitary and colonial Anthozoa / G.A.B. Shelton and I.D. McFarlane -- An electrophysiological analysis of behavioural integration in colonial anthozoans / Peter A.V. Anderson -- Morphology and electrophysiology of the through-conducting systems in pennatulid coelenterates / Richard A. Satterlie, Peter A.V. Anderson, and James Case -- Probable functions of bioluminescence in the Pennatulacea (Cnidaria, Anthozoa) / James G. Morin -- Strategies for the study of the coelenterate brain / L.M. Passano -- The control of fast and slow muscle contractions in the siphonophore stem / G.O. Mackie -- The effect of electrical stimulation and some drugs on conducting systems of the hydrocoral Millepora complanata / H.A.M. de Kruijf -- The reactions of Hydra attenuata Pall. to various photic stimuli / Pierre Tardent, Ernst Frei, Markus Borner -- Analysis of Hydra contraction behaviour / Cloe Taddei-Ferretti, L. Cordella and S. Chillemi -- The ultrastructural basis for the electrical coordination between epithelia of Hydra / Linda Hufnagel and G. Kass-Simon -- Coordination of juxtaposed muscle layers as seen in Hydra / G. Kass-Simon -- Ionic requirements of transepithelial potentials in isolated cell layers of hydra / Martin Macklin and Gary Westbrook -- Electrophysiological correlates of feeding behavior in Tubularia / Norman B. Rushforth.