Introduction. Alien Species in European Waters; Leppakoski, et al. Bioinvasion Ecology: Assessing Invasion Impact and Scale; Carlton. Who is Who Among Nonindigenous Species. Protists -- A Dominant Component of the Ballast-Transported Biota; Hulsmann, Galil. Introduced Marine Algae and Vascular Plants in European Aquatic Environments; Wallentinus. Coscinodiscus wailesii -- A Nuisance Diatom in European Waters; Laing, Gollasch. The Comb Jelly Mneniopsis leidyi in the Black Sea; Kideys. The Predatory Water Flea Cercopagis pengoi in the Baltic Sea: Invasion History, Distribution and Implications to Ecosystem Dynamics; Telesh, Ojaveer. History and Success of an Invasion into the Baltic Sea: The Polychaete Marenzelleria cf. viridis, Development and Strategies; Zettler, et al. Alien Crayfish in Europe: Negative and Positive Impacts and Interactions with Native Crayfish; Westman. Invasion History, Biology and Impacts of the Baikalian Amphipod Gmelinoides fasciatus; Panov, Berezina. Ponto-Caspian Amphipods and Mysids in the Inland Waters of Lithuania: History of Introduction, Current Distribution and Relations With Native Malacostracans; Arbaciauskas. Teredo navalis -- The Cryptogenic Shipworm; Hoppe. Introduction and Acclimatisation of the Pacific Carpet Clam, Tapes philippinarum, to Italian Waters; Breber. Dreissena (D.) polymorpha: Evolutionary Origin and Biological Peculiarities as Prerequisites of Invasion Success; Orlova. Zebra Mussel: Impacts and Spread; Minchin, et al. Red King Crab (Paralithodes camtshaticus) and Pink Salmon (Oncorhynchus gorbuscha) in the Barents Sea; Petryashov, et al. Alien Freshwater Fishes of Europe; Lehtonen. Introduced Semiaquatic Birds and Mammals in Europe; Nummi. Genetics on Invasive Species; Muller, Griebeler. Vectors. Vectors -- How Exotics Get Around; Minchin, Gollasch. Oyster Imports as a Vector for the Introduction of Alien Species into Northern and Western Europe Coastal Waters; Wolff, Reise. Exotics for Stocking and Aquaculture, Making Correct Decisions; Minchin, Rosenthal. Life in Ballast Tanks; Gollasch, et al. Ballast Tanks Sediments; Hamer. Regional Overviews. Biological Invasions in the White Sea; Berger, Naumov. Introduced Marine Organisms in Norwegian Waters, Including Svalbard; Hopkins. The Baltic Sea -- a Field Laboratory for Invasion Biology; Leppakoski, et al. Introduced Marine Species of the North Sea Coasts; Reise, et al. Exotics of Coastal and Inland Waters of Ireland and Britain; Minchin, Eno. Open Atlantic Coast of Europe -- A Century of Introduced Species; Goulletquer, et al. Review of Non-native Marine Plants in the Mediterranean Sea; R. Siguan. Current Status of Aquatic Introductions in Italy; O. Ambrogi. A Sea Change -- Exotics in the Eastern Mediterranean Sea; Galil, Zenetos. The Marmara Sea, A Link Between the Mediterranean and the Black Sea; Ozturk. The Black Sea -- A Recipient, Donor and Transit Area for Alien Species; Gomoiu, et al. Invaders in the Caspian Sea; Aladin, et al. Invasions by Alien Species in Inland Freshwater Bodies in Western Europe: The Rhine Delta; van der Velde, et al. Biological Invasions into German Waters: An Evaluation of the Importance of Different Human-mediated Vectors for Nonindigenous Macrozoobenthic Species; Nehring. Invasive Ponto-Caspian Species in Waters of the Vistula and Oder Basins and the Southern Baltic Sea; Jazdzewski, Konopacka. The Caspian-Volga-Baltic Invasion Corridor; Slynko, et al. Impacts. Ecological Impact of Ponto-Caspian Invaders in the Baltic Sea, European Inland Waters and the Great Lakes: an Inter-ecosystem Comparison; Ojaveer, et al. Fast Turnover in Dominance of Exotic Species in the Rhine River Determines Biodiversity and Ecosystem Function: An Affair Between Amphipods and Mussels; Haas, et al. Impacts of Zebra Mussels on Aquatic Communities and their Role as Ecosystem Engineers; Karatayev, et al. Risk Assessment. Hazard Analysis of Aquatic Species Invasions; Gollasch. Risk Assessment of Marine Biological Invasions; Hewitt, Hayes. Risk Based Methodology to Assess Invasive Aquatic Species in Ballast Water; Haugom, et al. Nature Conservation Implications of Marine Biological Invasions; Eno, Hamer. Treatment Measures. Preventive Treatment and Control Techniques for Ballast Water; Taylor, et al. The Biological Efficacy of Open Ocean Exchange -- Implications for Ballast Water Management; Galil, Hulsmann. Filtration as a Ballast Water Treatment Measure; Cangelosi. Databases. Databases on Aquatic Alien Species: North and Mediterranean Seas and Non-European Initiatives; Gollasch. Internet Database on Alien Species in the Baltic Sea; Olenin, et al. Epilogue. Toward Understanding Patterns of Coastal Marine Invasions: A Prospectus; Ruiz, Hewitt. References.