The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• Boero, Ferdinando
• CORNELIUS P.F.S. (1995) North-West European Thecate Hydroids and their Medusae, 2. Synopses of the British Fauna (New Series) 50: VII, 1-386.
• Cairns, Stephen D., Dale R. Calder, Anita Brinckmann-Voss, Clovis B. Castro, Daphne G. Fautin,.. 2002. Common and Scientific Names of Aquatic Invertebrates from the United States and Canada: Cnidaria and Ctenophora, Second Edition, 2002. American Fisheries Society Special Publication 28. xi + 115
• Dana, James D. 1890. Corals and Coral Islands. New York : Dodd, Mead and Company; Page 103
• Davoult, D.; Dewarumez, J.-M.; Luczak, C.; Migné, A. (1999). Nouvelles signalisations d'espèces benthiques sur les côtes françaises de la Manche orientale et de la Mer du Nord [New reports of benthic species from the french coasts of the eastern English Channel and the North Sea]. Cah. Biol. Mar. 40(2): 121-127
• Desbruyeres, D., Segonzac M., & Bright M. (2006). Handbook of Deep-Sea Hydrothermal Vent Fauna. Denisia. 18, 544.
• Engledow, H.; Spanoghe, G.; Volckaert, A.; Coppejans, E.; Degraer, S.; Vincx, M.; Hoffmann, M. (2001). Onderzoek naar (1) de fysische karakterisatie en (2) de biodiversiteit van strandhoofden en andere harde constructies langs de Belgische kust: eindrapport van de onderhandse overeenkomst dd. 17.02.2000 i.o.v. de Afdeling Waterwegen Kust van het Ministerie van de Vlaamse Gemeenschap, Departement Leefmilieu en infrastructuur, Administratie Waterwegen en Zeewezen [Research on (1) the physical characterization and (2) the biodiversity of groins and other hard constructions along the Belgian coast: final report]. Rapport Instituut voor Natuurbehoud, 2001.20. Universiteit Gent/Instituut voor Natuurbehoud: Gent & Brussel, Belgium. 110 + annexes pp.
• Guiry, M.D. & Guiry, G.M. (2011). Species.ie version 1.0 World-wide electronic publication, National University of Ireland, Galway (version of 15 March 2010).
• Hayward, P.J.; Ryland, J.S. (Ed.) (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. Clarendon Press: Oxford, UK. ISBN 0-19-857356-1. 627 pp.
• Hydrozoa (2012). Hydrallmania falcata (Linnaeus, 1758). In: Schuchert, P. (2012) World Hydrozoa database. Accessed through: Schuchert, P. (2012) World Hydrozoa database at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=117890 on 2013-03-01
• Leloup, E. (1933). Contribution à la connaissance des hydropolypes de la côte des Pays-Bas [Contribution to the knowladge of the hydropolyps of the Dutch coast]. Bull. Mus. royal d'Hist. Nat. Belg./Med. Kon. Natuurhist. Mus. Belg. 9(45): 1-30
• Leloup, E. (1934). Contributions à l'étude de la faune belge: 5. Les hydropolypes épizoïques du ver polychète, Aphrodite aculeata (Linné) [Contributions to the study of Belgian fauna: 5. Epizoïc hydropolyps of the polychaete, Aphrodite aculeata (Linné)]. Bull. Mus. royal d'Hist. Nat. Belg./Med. Kon. Natuurhist. Mus. Belg. 10(41): 1-6
• Leloup, E. (1952). Coelentérés [Coelenterata]. ---. Institut royal des Sciences naturelles de Belgique: Brussels, Belgium. 283 pp.
• Leloup, E. (1952). Contributions à l'étude de la faune belge: 19. Observation sur la crevette grise au large de la côte belge en 1949 [Contribution to the study on the Belgian fauna: 19. Observation on the brown shrimp along the Belgian coast in 1949]. Med. K. Belg. Inst. Nat. Wet. 18(1): 1-28
• MEDIN (2011). UK checklist of marine species derived from the applications Marine Recorder and UNICORN, version 1.0.  
• Müller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. Commission Régionale de Biologie Région Nord Pas-de-Calais: France. 307 pp.
• North-West Atlantic Ocean species (NWARMS)
• Nutting, C. C. 1901. Hydroids of the Woods Hole Region. Washington, DC : Government Printing Office. Bulletin of the United States Fish Commission, vol. 19, 1899; Fig.68
• Préfontaine, G. & P. Brunel. 1962. Liste d'invertébrés marins recueillis dans l'estuaire du Saint-Laurent de 1929 à 1934. Naturaliste Canadien, Quebec 89(8-9):237-263, fig. 1.
• RAMIL F & W. VERVOORT (1992) Zool. Verh., Leiden 277: 3-262.
• Schuchert, P. (2013). WoRMS Hydrozoa: World Hydrozoa database (version 2013-03-04). In: Species 2000 & ITIS Catalogue of Life, 11th March 2013 (Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A., eds). Digital resource at www.catalogueoflife.org/col/. Species 2000: Reading, UK.
• Simons, E.; Simons, G.; Corstanje, H. (1988). Report on the beach excursion at Oostduinkerke (Belgium) on 2 November 1988 [Verslag van de strandexcursie te Oostduinkerke op 2 november 1988]. De Strandvlo 8(4): 206-209
• Trott, T.J. 2004. Cobscook Bay inventory: a historical checklist of marine invertebrates spanning 162 years. Northeastern Naturalist (Special Issue 2): 261 - 324.
• UNESCO-IOC Register of Marine Organisms
• Zintzen, V. (2007). Biodiversity of shipwrecks from the Southern Bight of the North Sea. PhD Thesis, University of Louvain, Department of Biology, 343 p.
• Zühlke, R.; Alvsvåg, J.; De Boois, I.; Cotter, J.; Ehrich, S.; Ford, A.; Hinz, H.; Jarre-Teichmann, A.; Jennings, S.; Kröncke, I.; Lancaster, J.; Piet, G.; Prince, P. (2001). Epibenthic diversity in the North Sea. Senckenb. Marit. 31(2): 269-281
• d'Udekem d'Acoz, C. (1990). Notes on some organisms collected between Wenduine and De Haan on 3 March 1990 [Notes sur quelques organismes recueillis entre Wenduine et De Haan le 3 mars 1990]. De Strandvlo 10(3): 74-78
• van der Land, J.; Vervoort, W.; Cairns, S.D.; Schuchert, P. (2001). Hydrozoa, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 112-120