A review of ecological effects of offshore dredging is presented, based on literature review and personal contacts, to provide a framework for determination of need for further knowledge. In general, little concrete effort aimed specifically at the determination of effects of offshore dredging was uncovered, although basic ecological works that are generally applicable are available. The report shows that the beach may be divided into three zones on the basis of moisture and biota found, and describes the possible effects on these biota resulting from offshore dredging and deposition of sediments on a beach. Background descriptive material and impacts on both offshore dredged areas and nourished beaches, and suggestions for further research follow.