Aequorea Péron & Lesueur, 1810 (additional source)
Aetea anguina (Linnaeus, 1758) (additional source)
Ampharete acutifrons (Grube, 1860) (additional source)
Ampharete finmarchica (M. Sars, 1865) (additional source)
Amphitrite Müller, 1771 (additional source)
Anobothrus gracilis (Malmgren, 1866) (additional source)
Anoplostoma Bütschli, 1874 (additional source)
Arabella iricolor (Montagu, 1804) (additional source)
Aricidea Webster, 1879 (additional source)
Ascidia Linnaeus, 1767 (additional source)
Beroe Browne, 1756 accepted as Beroe O.F. Müller, 1776 (additional source)
Bougainvillia Lesson, 1830 (additional source)
Brada villosa (Rathke, 1843) accepted as Bradabyssa villosa (Rathke, 1843) (additional source)
Capitella Blainville, 1828 (additional source)
Capitella capitata (Fabricius, 1780) (additional source)
Caprella penantis Leach, 1814 (additional source)
Cerebratulus [Renier], [1804] (additional source)
Cerianthus Delle Chiaje, 1841 (additional source)
Chaetopterus Cuvier, 1830 (additional source)
Chaetozone setosa Malmgren, 1867 (additional source)
Chromadora Bastian, 1865 (additional source)
Chromadora nudicapitata Bastian, 1865 (additional source)
Chromadorina (additional source)
Cirratulus Lamarck, 1818 (additional source)
Cirratulus cirratus (O. F. Müller, 1776) (additional source)
Cirrophorus branchiatus Ehlers, 1908 (additional source)
Cirrophorus furcatus (Hartman, 1957) (additional source)
Cistenides hyperborea Malmgren, 1866 (additional source)
Cliona celata Grant, 1826 (additional source)
Clytia Lamouroux, 1812 (additional source)
Clytia hemisphaerica (Linnaeus, 1767) (additional source)
Cobbia de Man, 1907 (additional source)
Conopeum reticulum (Linnaeus, 1767) (additional source)
Daptonema Cobb, 1920 (additional source)
Dinophysis acuminata Claparède & Lachmann, 1859 (additional source)
Discoconchoecia elegans (Sars, 1866) (additional source)
Dorylaimopsis Ditlevsen, 1918 (additional source)
Drilonereis Claparède, 1870 (additional source)
Echiurus echiurus (Pallas, 1766) (additional source)
Ectopleura crocea (Agassiz, 1862) (additional source)
Edwardsia Quatrefages, 1842 (additional source)
Euchaeta marina (Prestandrea, 1833) (additional source)
Eulalia Savigny, 1822 (additional source)
Eulalia viridis (Linnaeus, 1767) (additional source)
Eumida sanguinea (Örsted, 1843) (additional source)
Eurytemora affinis (Poppe, 1880) accepted as Eurytemora affinis affinis (Poppe, 1880) (additional source)
Gersemia von Marenzeller, 1878 (basis of record)
Gersemia clavata (Danielssen, 1887) (basis of record)
Glycera robusta Ehlers, 1868 (basis of record)
Halalaimus de Man, 1888 (additional source)
Harmothoe imbricata (Linnaeus, 1767) (additional source)
Heteromastus filiformis (Claparède, 1864) (additional source)
Hyas coarctatus Leach, 1815 (additional source)
Jassa marmorata Holmes, 1905 (additional source)
Laonice cirrata (M. Sars, 1851) (additional source)
Lepas anatifera Linnaeus, 1758 represented as Lepas (Lepas) anatifera Linnaeus, 1758 (additional source)
Lepidonotus squamatus (Linnaeus, 1758) (additional source)
Levinsenia gracilis (Tauber, 1879) (additional source)
Lumbrineris Blainville, 1828 (additional source)
Lumbrineris latreilli Audouin & Milne Edwards, 1833 (additional source)
Lysippe labiata Malmgren, 1866 (additional source)
Mactromeris polynyma (W. Stimpson, 1860) (basis of record)
Maldane Grube, 1860 (additional source)
Marionina Michaelsen in Pfeffer, 1890 (additional source)
Mediomastus Hartman, 1944 (additional source)
Melinna cristata (M. Sars, 1851) (additional source)
Melita Leach, 1814 (additional source)
Membranipora de Blainville, 1830 (additional source)
Metalinhomoeus de Man, 1907 (additional source)
Microcalanus pusillus Sars G.O., 1903 (basis of record)
Microporella ciliata (Pallas, 1766) (additional source)
Microsetella norvegica (Boeck, 1865) (additional source)
Monhystera Bastian, 1865 (additional source)
Myxicola infundibulum (Montagu, 1808) (additional source)
Nephtys ciliata (Müller, 1788) (additional source)
Nereis pelagica Linnaeus, 1758 (additional source)
Nerilla Schmidt, 1848 (additional source)
Notomastus latericeus Sars, 1851 (additional source)
Obelia Péron & Lesueur, 1810 (additional source)
Obelia geniculata (Linnaeus, 1758) (additional source)
Oikopleura (Vexillaria) dioica Fol, 1872 (additional source)
Oithona similis Claus, 1866 (additional source)
Ophelina acuminata Örsted, 1843 (additional source)
Orbinia Quatrefages, 1866 (additional source)
Orchomenella pinguis (Boeck, 1861) (additional source)
Owenia fusiformis Delle Chiaje, 1844 (additional source)
Paradoneis lyra (Southern, 1914) (additional source)
Paraphoxus oculatus (G. O. Sars, 1879) (additional source)
Paroithona Farran, 1908 accepted as Oithona Baird, 1843 (additional source)
Physophora hydrostatica Forsskål, 1775 (additional source)
Pista Malmgren, 1866 (additional source)
Pista cristata (Müller, 1776) (additional source)
Platorchestia platensis (Krøyer, 1845) (additional source)
Podocotyle Dujardin, 1845 (additional source)
Polycirrus Grube, 1850 (additional source)
Polydora Bosc, 1802 (additional source)
Polygordius Schneider, 1868 (additional source)
Potamilla neglecta (Sars, 1851) (additional source)
Praxillella Verrill, 1881 (additional source)
Praxillella gracilis (M. Sars, 1861) (additional source)