Acanthodoris pilosa (Abildgaard, 1789) (additional source)
Aeverrillia setigera (Hincks, 1887) (basis of record)
Agalma elegans (Sars, 1846) (additional source)
Ampharete acutifrons (Grube, 1860) (additional source)
Amphipholis squamata (Delle Chiaje, 1828) (additional source)
Amphitrite cirrata Müller, 1776 (additional source)
Anonyx lilljeborgi Boeck, 1871 (additional source)
Arabella iricolor (Montagu, 1804) (additional source)
Aricidea nolani Webster & Benedict, 1887 (basis of record)
Aricidea quadrilobata Webster & Benedict, 1887 represented as Aricidea (Strelzovia) quadrilobata Webster & Benedict, 1887 (additional source)
Artacama proboscidea Malmgren, 1866 (additional source)
Aurelia aurita (Linnaeus, 1758) (additional source)
Balanus crenatus Bruguière, 1789 (additional source)
Bopyroides hippolytes (Kröyer, 1838) (additional source)
Botryllus schlosseri (Pallas, 1766) (additional source)
Bougainvillia superciliaris (L. Agassiz, 1849) (additional source)
Bowerbankia gracilis Leidy, 1855 accepted as Amathia gracilis (Leidy, 1855) (additional source)
Brada villosa (Rathke, 1843) accepted as Bradabyssa villosa (Rathke, 1843) (additional source)
Byblis serrata S.I. Smith, 1873 (additional source)
Callopora craticula (Alder, 1856) (additional source)
Calycella syringa (Linnaeus, 1767) (additional source)
Campanularia groenlandica Levinsen, 1893 (additional source)
Campanularia volubilis (Linnaeus, 1758) (additional source)
Capitella capitata (Fabricius, 1780) (additional source)
Caprella penantis Leach, 1814 (additional source)
Catablema vesicarium (A. Agassiz, 1862) (additional source)
Cauloramphus cymbaeformis (Hincks, 1877) (additional source)
Celleporella hyalina (Linnaeus, 1767) (additional source)
Chaetozone setosa Malmgren, 1867 (additional source)
Ciona intestinalis (Linnaeus, 1767) (additional source)
Cirratulus cirratus (O. F. Müller, 1776) (additional source)
Clava multicornis (Forsskål, 1775) (additional source)
Clinocardium ciliatum (O. Fabricius, 1780) accepted as Ciliatocardium ciliatum ciliatum (O. Fabricius, 1780) (additional source)
Clytia hemisphaerica (Linnaeus, 1767) (additional source)
Corophium crassicorne Bruzelius, 1859 accepted as Crassicorophium crassicorne (Bruzelius, 1859) (additional source)
Corophium insidiosum Crawford, 1937 accepted as Monocorophium insidiosum (Crawford, 1937) (additional source)
Cossura longocirrata Webster & Benedict, 1887 (additional source)
Cribrilina annulata (O. Fabricius, 1780) accepted as Juxtacribrilina annulata (Fabricius, 1780) (additional source)
Crossaster papposus (Linnaeus, 1767) (additional source)
Cyanea capillata (Linnaeus, 1758) (additional source)
Dendronotus frondosus (Ascanius, 1774) (additional source)
Dodecaceria concharum Örsted, 1843 (additional source)
Ectopleura crocea (Agassiz, 1862) (additional source)
Ectopleura larynx (Ellis & Solander, 1786) (additional source)
Eudendrium capillare Alder, 1856 (additional source)
Eudendrium ramosum Van Beneden, 1844 accepted as Bougainvillia muscus (Allman, 1863) (additional source)
Eulalia bilineata (Johnston, 1840) (additional source)
Eulalia viridis (Linnaeus, 1767) (additional source)
Eunice pennata (Müller, 1776) (additional source)
Eusyllis blomstrandi Malmgren, 1867 (additional source)
Exogone (Exogone) dispar (Webster, 1879) accepted as Exogone dispar (Webster, 1879) (additional source)
Exogone (Exogone) verugera (Claparède, 1868) accepted as Exogone verugera (Claparède, 1868) (additional source)
Flabellina verrucosa (M. Sars, 1829) accepted as Coryphella verrucosa (M. Sars, 1829) (additional source)
Gammaropsis nitida (Stimpson, 1853) (additional source)
Glycera capitata Örsted, 1842 (additional source)
Gonionemus vertens A. Agassiz, 1862 (additional source)
Halecium sessile Norman, 1867 (additional source)
Haliclystus auricula James-Clark, 1863 (additional source)
Harmothoe imbricata (Linnaeus, 1767) (additional source)
Heteromastus filiformis (Claparède, 1864) (additional source)
Homarus americanus H. Milne Edwards, 1837 (additional source)
Hydractinia echinata (Fleming, 1828) (additional source)
Hyperia galba (Montagu, 1813) (additional source)
Jassa marmorata Holmes, 1905 (additional source)
Lafoea dumosa (Fleming, 1820) (additional source)
Laomedea flexuosa Alder, 1857 (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)
Leuckartiara octona (Fleming, 1823) (additional source)
Leucosolenia botryoides (Ellis & Solander, 1786) (additional source)
Levinsenia gracilis (Tauber, 1879) (additional source)
Limnoria lignorum (Rathke, 1799) (additional source)
Maera danae (Stimpson, 1853) (additional source)
Melicertum octocostatum (M. Sars, 1835) (additional source)
Melinna cristata (M. Sars, 1851) (additional source)
Molgula manhattensis (De Kay, 1843) (additional source)
Nanomia cara Agassiz, 1865 (additional source)
Nephtys caeca (Fabricius, 1780) (additional source)
Nephtys ciliata (Müller, 1788) (additional source)
Nephtys longosetosa Örsted, 1842 (additional source)
Nephtys paradoxa Malm, 1874 (additional source)
Nereis pelagica Linnaeus, 1758 (additional source)
Nereis zonata Malmgren, 1867 (additional source)
Nicomache lumbricalis (Fabricius, 1780) (additional source)
Nothria conchylega (Sars, 1835) (additional source)
Notomastus latericeus Sars, 1851 (additional source)
Obelia geniculata (Linnaeus, 1758) (additional source)
Obelia longissima (Pallas, 1766) (additional source)
Onoba mighelsii (W. Stimpson, 1851) (additional source)
Ophelina acuminata Örsted, 1843 (additional source)
Ophelina aulogaster (Rathke, 1843) accepted as Ophelina acuminata Örsted, 1843 (additional source)
Ophiura sarsii Lütken, 1855 (additional source)
Orchestia platensis Krøyer, 1845 accepted as Platorchestia platensis (Krøyer, 1845) (additional source)
Pherusa plumosa (Müller, 1776) (additional source)
Pholoe minuta (Fabricius, 1780) (additional source)
Polydora ciliata (Johnston, 1838) (additional source)
Polydora cornuta Bosc, 1802 (additional source)
Polymastia robusta Bowerbank, 1862 accepted as Polymastia boletiformis (Lamarck, 1815) (additional source)
Potamilla neglecta (Sars, 1851) (additional source)