Preface, Ecology of the green macroalga Codium fragile (Suringar) Hariot 1889: invasive and non-invasive subspecies, Coral/seaweed competition and the control of reef community structure within and between latitudes, Ecological impact of green macroalgal blooms, The impact of dredging works in coastal waters: a review of the sensitivity to disturbance and subsequent recovery of biological resources on the sea bed, Obelia (Cnidaria, Medusozoa, Hydrozoa): phenomenon, aspects of investigations, perspectives for utilization, Symbiotic polychaetes: review of known species, Cephalopod eggs and egg masses, The ecological implications of small body size among coral-reef fishes, Author index, Systematic index, Subject index