Aeginella spinosa Boeck, 1861 (additional source)
Aeginina longicornis (Krøyer, 1843) (additional source)
Alcyonidium gelatinosum (Linnaeus, 1761) (additional source)
Ampelisca verrilli Mills, 1967 (basis of record)
Amphipholis squamata (Delle Chiaje, 1828) (additional source)
Amphitrite cirrata Müller, 1776 (additional source)
Ampithoe valida S.I. Smith, 1873 (additional source)
Apistobranchus tullbergi (Théel, 1879) (additional source)
Arenicola cristata Stimpson, 1856 (additional source)
Autolytus prismaticus (O.F. Müller, 1776) accepted as Proceraea prismatica (O.F. Müller, 1776) (additional source)
Balanus balanus (Linnaeus, 1758) (additional source)
Bowerbankia imbricata (Adams, 1798) accepted as Amathia imbricata (Adams, 1800) (additional source)
Caprella linearis (Linnaeus, 1767) (additional source)
Caprella septentrionalis Krøyer, 1838 (additional source)
Catriona gymnota (Couthouy, 1838) (additional source)
Chaetozone setosa Malmgren, 1867 (additional source)
Childia groenlandica (Levinsen, 1879) (additional source)
Cirratulus cirratus (O. F. Müller, 1776) (additional source)
Clitellio (Clitellio) arenarius (Müller, 1776) (additional source)
Dodecaceria concharum Örsted, 1843 (additional source)
Echinarachnius parma (Lamarck, 1816) (additional source)
Enchytraeus albidus Henle, 1837 (additional source)
Eteone trilineata Webster & Benedict, 1887 (additional source)
Eualus gaimardii (H. Milne Edwards, 1837) (additional source)
Eubranchus exiguus (Alder & Hancock, 1848) (additional source)
Eubranchus pallidus (Alder & Hancock, 1842) accepted as Amphorina pallida (Alder & Hancock, 1842) (additional source)
Exogone (Exogone) dispar (Webster, 1879) accepted as Exogone dispar (Webster, 1879) (additional source)
Filograna implexa Berkeley, 1835 (additional source)
Flabellina gracilis (Alder & Hancock, 1844) accepted as Microchlamylla gracilis (Alder & Hancock, 1844) accepted as Coryphella gracilis (Alder & Hancock, 1844) (additional source)
Flabellina verrucosa (M. Sars, 1829) accepted as Coryphella verrucosa (M. Sars, 1829) (additional source)
Gammarus finmarchicus Dahl, 1938 accepted as Echinogammarus finmarchicus (Dahl, 1938) accepted as Echinogammarus incertae sedis finmarchicus (Dahl, 1938) (additional source)
Gattyana cirrosa (Pallas, 1766) accepted as Gattyana cirrhosa (Pallas, 1766) (additional source)
Harmothoe extenuata (Grube, 1840) (additional source)
Harmothoe imbricata (Linnaeus, 1767) (additional source)
Henricia sanguinolenta (O.F. Müller, 1776) (additional source)
Hippothoa hyalina (Linnaeus, 1767) accepted as Celleporella hyalina (Linnaeus, 1767) (additional source)
Hybocodon prolifer Agassiz, 1860 (additional source)
Hyperia medusarum (Müller, 1776) (additional source)
Idotea balthica (Pallas, 1772) (additional source)
Lepidonotus squamatus (Linnaeus, 1758) (additional source)
Ligia oceanica (Linnaeus, 1767) (additional source)
Lineus sanguineus (Rathke, 1799) (additional source)
Macrostomum Schmidt, 1848 (additional source)
Maldane sarsi Malmgren, 1865 (additional source)
Naineris quadricuspida (Fabricius, 1780) (additional source)
Nephtys caeca (Fabricius, 1780) (additional source)
Nephtys ciliata (Müller, 1788) (additional source)
Notoplana atomata (Müller OF, 1776) (additional source)
Oceanobdella microstoma (Johansson, 1896) (additional source)
Oerstedia dorsalis (Abildgaard, 1806) (additional source)
Ophiopholis aculeata (Linnaeus, 1767) (additional source)
Oxytonostoma typica Malm, 1863 (additional source)
Paranais litoralis (Müller, 1784) (additional source)
Pontoporeia femorata Krøyer, 1842 (additional source)
Pygospio elegans Claparède, 1863 (additional source)
Scoloplos armiger (Müller, 1776) (additional source)
Scypha ciliata (Fabricius, 1780) accepted as Sycon ciliatum (Fabricius, 1780) (additional source)
Spio filicornis (Müller, 1776) (additional source)
Spio setosa Verrill, 1873 (additional source)
Spiophanes bombyx (Claparède, 1870) (additional source)
Staurophora mertensii Brandt, 1835 accepted as Staurostoma mertensii (Brandt, 1835) (additional source)
Strongylocentrotus droebachiensis (O.F. Müller, 1776) (additional source)
Tiaropsis multicirrata (M. Sars, 1835) (additional source)
Tomopteris septentrionalis Steenstrup, 1849 (additional source)
Travisia carnea Verrill, 1873 (additional source)

English American tube-dwelling anemone for Ceriantheopsis americana (Agassiz in Verrill, 1864)
English ceriantharian anemone for Ceriantheopsis americana (Agassiz in Verrill, 1864)
English northern stony coral [from synonym] for Astrangia astreiformis Milne Edwards & Haime, 1849
English southern cerianthid for Ceriantheopsis americana (Agassiz in Verrill, 1864)
English star coral [from synonym] for Astrangia astreiformis Milne Edwards & Haime, 1849
English yellow flabby-sponge for Mycale (Carmia) fibrexilis (Wilson, 1894)