Acanthodoris pilosa (Abildgaard, 1789) (additional source)
Actinia obtruncata Stimpson, 1853 (basis of record)
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)
Amicula vestita (Broderip & G. B. Sowerby I, 1829) (additional source)
Ampharete acutifrons (Grube, 1860) (additional source)
Amphicteis gunneri (M. Sars, 1835) (additional source)
Amphipholis squamata (Delle Chiaje, 1828) (additional source)
Amphiporeia lawrenciana Shoemaker, 1929 (additional source)
Amphiporus angulatus (Müller, 1774) (additional source)
Amphiporus bioculatus sensu Verrill, 1892 (additional source)
Amphiporus caecus Verrill, 1892 (basis of record)
Amphiporus frontalis Verrill, 1892 (additional source)
Amphiporus griseus (Stimpson, 1855) (basis of record)
Amphiporus ochraceus (Verrill, 1873) (basis of record)
Amphitrite johnstoni Malmgren, 1866 accepted as Neoamphitrite figulus (Dalyell, 1853) (additional source)
Anobothrus gracilis (Malmgren, 1866) (additional source)
Anomia simplex A. d'Orbigny, 1853 (basis of record)
Ascidia callosa Stimpson, 1852 (additional source)
Astarte borealis (Schumacher, 1817) accepted as Tridonta borealis Schumacher, 1817 (additional source)
Astarte castanea (Say, 1822) accepted as Isocrassina castanea (Say, 1822) (additional source)
Astarte quadrans A. Gould, 1841 (additional source)
Astarte subaequilatera G. B. Sowerby II, 1854 (basis of record)
Astarte undata A. Gould, 1841 (additional source)
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)
Bostrichobranchus pilularis (Verrill, 1871) (basis of record)
Botryllus schlosseri (Pallas, 1766) (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 pubescens (A. E. Verrill, 1882) (additional source)
Colus pygmaeus (A. Gould, 1841) (additional source)
Colus stimpsoni (Mörch, 1868) (additional source)
Corophium tuberculatum Shoemaker, 1934 accepted as Monocorophium tuberculatum (Shoemaker, 1934) (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 cribraria Stimpson, 1854 (basis of record)
Crisia eburnea (Linnaeus, 1758) (additional source)
Crucibulum striatum (Say, 1826) (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)
Cyathura polita (Stimpson, 1855) (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)
Dioctophyma Lamouroux, 1824 accepted as Dioctophyme Collet-Meygret, 1802 (basis of record)
Dioctophyma renale (Goeze, 1782) accepted as Dioctophyme renale (Goeze, 1782) Collet-Meygret, 1802 (basis of record)
Distaplia clavata (Sars, 1851) (additional source)
Drifa glomerata (Verrill, 1869) (additional source)
Echinarachnius parma (Lamarck, 1816) (additional source)
Edwardsia elegans Verrill, 1869 (additional source)
Edwardsia sipunculoides (Stimpson, 1853) (additional source)
Enoplus anisospiculus Nelson, Hopper & Webster, 1972 (basis of record)
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)
Eudorella truncatula (Bate, 1856) (additional source)
Fragilonemertes rosea (Leidy, 1851) (basis of record)
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)
Haliclona canaliculata Hartman, 1958 represented as Haliclona (Rhizoniera) canaliculata Hartman, 1958 (additional source)
Haliclystus auricula James-Clark, 1863 (additional source)
Haliclystus salpinx James-Clark, 1863 (additional source)
Halimocyathus platypus James-Clark, 1863 (basis of record)
Haliplanella lineata (Verrill, 1869) accepted as Diadumene lineata (Verrill, 1869) (additional source)
Haloclava producta (Stimpson, 1856) (basis of record)
Halocynthia pyriformis (Rathke, 1806) (additional source)
Hemiarthrus abdominalis (Krøyer, 1840) (additional source)