Acanthodoris pilosa (Abildgaard, 1789) (additional source)
Actinostola callosa (Verrill, 1882) (additional source)
Adalaria proxima (Alder & Hancock, 1854) (additional source)
Aega psora (Linnaeus, 1758) (additional source)
Aetea anguina (Linnaeus, 1758) (additional source)
Alcyonidium polyoum (Hassall, 1841) (additional source)
Alcyonium digitatum Linnaeus, 1758 (additional source)
Ampharete acutifrons (Grube, 1860) (additional source)
Amphicteis gunneri (M. Sars, 1835) (additional source)
Amphilectus lobata (Montagu, 1814) accepted as Amphilectus ovulum (Schmidt, 1870) (source of synonymy)
Amphipholis squamata (Delle Chiaje, 1828) (additional source)
Amphiporus angulatus (Müller, 1774) (additional source)
Amphiporus bioculatus sensu Verrill, 1892 (additional source)
Amphiporus groenlandicus Örsted, 1843 (additional source)
Amphitrite johnstoni Malmgren, 1866 accepted as Neoamphitrite figulus (Dalyell, 1853) (additional source)
Anobothrus gracilis (Malmgren, 1866) (additional source)
Anomia aculeata O. F. Müller, 1776 accepted as Heteranomia squamula (Linnaeus, 1758) (basis of record)
Ascidia callosa Stimpson, 1852 (additional source)
Astarte borealis (Schumacher, 1817) accepted as Tridonta borealis Schumacher, 1817 (additional source)
Astarte subaequilatera G. B. Sowerby II, 1854 (basis of record)
Atolla wyvillei Haeckel, 1880 (additional source)
Aulactinia stella (Verrill, 1864) (additional source)
Aurelia aurita (Linnaeus, 1758) (additional source)
Bolinopsis infundibulum (O.F. Müller, 1776) (additional source)
Boltenia echinata (Linnaeus, 1767) (additional source)
Boltenia ovifera (Linnaeus, 1767) (additional source)
Bopyroides hippolytes (Kröyer, 1838) (additional source)
Boreotrophon clathratus (Linnaeus, 1767) (additional source)
Boreotrophon truncatus (Strøm, 1768) (additional source)
Botryllus schlosseri (Pallas, 1766) (additional source)
Buccinum tottenii W. Stimpson, 1865 (additional source)
Bugula simplex Hincks, 1886 accepted as Bugulina simplex (Hincks, 1886) (additional source)
Caberea ellisii (Fleming, 1814) (additional source)
Calliobdella van Beneden & Hesse, 1863 (additional source)
Calliobdella nodulifera (Malm, 1863) (additional source)
Carcinonemertes carcinophila (Kölliker, 1845) (additional source)
Ceramaster granularis (Retzius, 1783) (additional source)
Cerebratulus lacteus (Leidy, 1851) (additional source)
Cerebratulus marginatus [Renier], [1804] (additional source)
Chalinula loosanoffi (Hartman, 1958) (additional source)
Chelyosoma macleayanum Broderip & Sowerby, 1830 (additional source)
Chlamys islandica (O. F. Müller, 1776) (additional source)
Ciona intestinalis (Linnaeus, 1767) (additional source)
Clione limacina (Phipps, 1774) (additional source)
Cnemidocarpa mollis (Stimpson, 1852) (additional source)
Colus pygmaeus (A. Gould, 1841) (additional source)
Cossura longocirrata Webster & Benedict, 1887 (additional source)
Craterolophus convolvulus (Johnston, 1835) (additional source)
Crella rosea (Topsent, 1892) represented as Crella (Yvesia) rosea (Topsent, 1892) (additional source)
Crisia eburnea (Linnaeus, 1758) (additional source)
Cryptosula pallasiana (Moll, 1803) (additional source)
Cuspidaria glacialis (G. O. Sars, 1878) (additional source)
Cuthona concinna (Alder & Hancock, 1843) accepted as Cuthonella concinna (Alder & Hancock, 1843) (additional source)
Cyanea capillata (Linnaeus, 1758) (additional source)
Dendrobeania murrayana (Bean in Johnston, 1847) (additional source)
Dendrodoa carnea (Agassiz, 1850) (additional source)
Diadumene leucolena (Verrill, 1866) (basis of record)
Didemnum albidum (Verrill, 1871) (additional source)
Distaplia clavata (Sars, 1851) (additional source)
Drifa glomerata (Verrill, 1869) (additional source)
Epitonium greenlandicum (Perry, 1811) accepted as Boreoscala greenlandica (Perry, 1811) (additional source)
Epizoanthus incrustatus Düben & Koren, 1847 accepted as Epizoanthus papillosus Johnston, 1842 (additional source)
Eubranchus exiguus (Alder & Hancock, 1848) (additional source)
Euchone rubrocincta (Sars, 1862) (additional source)
Eucratea loricata (Linnaeus, 1758) (additional source)
Eudendrium tenellum Allman, 1877 (additional source)
Eudorella truncatula (Bate, 1856) (additional source)
Gammarus oceanicus Segerstråle, 1947 (additional source)
Gammarus setosus Dementieva, 1931 (additional source)
Gonactinia prolifera (Sars, 1835) (additional source)
Halcampa duodecimcirrata (Sars, 1851) (additional source)
Halichondria sitiens (Schmidt, 1870) represented as Halichondria (Eumastia) sitiens (Schmidt, 1870) (additional source)
Haliclona (Haliclona) oculata (Linnaeus, 1759) (additional source)
Haliclystus auricula James-Clark, 1863 (additional source)
Haliclystus salpinx James-Clark, 1863 (additional source)
Haliplanella lineata (Verrill, 1869) accepted as Diadumene lineata (Verrill, 1869) (additional source)
Halocynthia pyriformis (Rathke, 1806) (additional source)
Hemiarthrus abdominalis (Krøyer, 1840) (additional source)
Hiatella arctica (Linnaeus, 1767) (additional source)
Hippoporina reticulatopunctata (Hincks, 1877) (additional source)
Hyale prevosti (H. Milne Edwards, 1830) accepted as Apohyale prevostii (H. Milne Edwards, 1830) (additional source)
Hymeniacidon heliophila (Wilson, 1911) (additional source)
Iophon hyndmani (Bowerbank, 1858) (additional source)
Lacuna pallidula (da Costa, 1778) (additional source)
Lacuna vincta (Montagu, 1803) (additional source)
Lafoea gracillima (Alder, 1856) accepted as Lafoea dumosa (Fleming, 1820) (additional source)
Laonice cirrata (M. Sars, 1851) (additional source)
Lepidopleurus cancellatus (G. B. Sowerby II, 1840) accepted as Leptochiton cancellatus (G. B. Sowerby II, 1840) (additional source)
Leucosolenia botryoides (Ellis & Solander, 1786) (additional source)
Leucosolenia cancellata Verrill, 1873 accepted as Clathrina cancellata (Verrill, 1873) (additional source)
Limnoria lignorum (Rathke, 1799) (additional source)
Lineus ruber (Müller, 1774) (additional source)
Lucernaria quadricornis O. F. Müller, 1776 (additional source)
Lyonsia arenosa (Møller, 1842) (additional source)
Macoma calcarea (Gmelin, 1791) (additional source)
Melinna cristata (M. Sars, 1851) (additional source)
Melonanchora elliptica Carter, 1874 (additional source)
Mertensia ovum (Fabricius, 1780) (additional source)
Metridium senile (Linnaeus, 1761) (additional source)
Molgula citrina Alder & Hancock, 1848 (additional source)