Acanthodoris pilosa (Abildgaard, 1789) (additional source)
Aplidium glabrum (Verrill, 1871) (additional source)
Argulus funduli Krøyer, 1863 (basis of record)
Ascidia callosa Stimpson, 1852 (additional source)
Aulactinia stella (Verrill, 1864) (additional source)
Boltenia ovifera (Linnaeus, 1767) (additional source)
Cerebratulus lacteus (Leidy, 1851) (additional source)
Colus stimpsoni (Mörch, 1868) (additional source)
Corophium tuberculatum Shoemaker, 1934 accepted as Monocorophium tuberculatum (Shoemaker, 1934) (basis of record)
Crucibulum striatum (Say, 1826) (additional source)
Cyanophthalma obscura (Schultze, 1851) (additional source)
Dendrodoa carnea (Agassiz, 1850) (additional source)
Didemnum albidum (Verrill, 1871) (additional source)
Distaplia clavata (Sars, 1851) (additional source)
Echinarachnius parma (Lamarck, 1816) (additional source)
Edwardsia elegans Verrill, 1869 (basis of record)
Electra crustulenta (Pallas, 1766) accepted as Einhornia crustulenta (Pallas, 1766) (additional source)
Eubranchus exiguus (Alder & Hancock, 1848) (additional source)
Eubranchus pallidus (Alder & Hancock, 1842) accepted as Amphorina pallida (Alder & Hancock, 1842) (additional source)
Eubranchus tricolor Forbes, 1838 (additional source)
Eudorella truncatula (Bate, 1856) (additional source)
Eurytemora herdmani Thompson I.C. & Scott A., 1897 in Herdman, Thompson & Scott, 1897 (additional source)
Euspira triseriata (Say, 1826) (basis of record)
Flabellina pellucida (Alder & Hancock, 1843) accepted as Carronella pellucida (Alder & Hancock, 1843) (additional source)
Gammarus oceanicus Segerstråle, 1947 (additional source)
Gammarus setosus Dementieva, 1931 (additional source)
Hyale prevosti (H. Milne Edwards, 1830) accepted as Apohyale prevostii (H. Milne Edwards, 1830) (additional source)
Hydractinia echinata (Fleming, 1828) (additional source)
Hydractinia valens Fraser, 1941 (basis of record)
Lacuna vincta (Montagu, 1803) (additional source)
Leucosolenia botryoides (Ellis & Solander, 1786) (additional source)
Lineus ruber (Müller, 1774) (additional source)
Molgula citrina Alder & Hancock, 1848 (additional source)
Molgula complanata Alder & Hancock, 1870 (additional source)
Nassarius trivittatus (Say, 1822) accepted as Ilyanassa trivittata (Say, 1822) (additional source)
Nematostella vectensis Stephenson, 1935 (additional source)
Oithona similis Claus, 1866 (additional source)
Onoba aculeus (A. Gould, 1841) (additional source)
Ophiopholis aculeata (Linnaeus, 1767) (additional source)
Petricola pholadiformis Lamarck, 1818 accepted as Petricolaria pholadiformis (Lamarck, 1818) (additional source)
Polydora ciliata (Johnston, 1838) (additional source)
Protodorvillea kefersteini (McIntosh, 1869) (additional source)
Protohydra leuckarti Greeff, 1870 (additional source)
Ramphogordius sanguineus (Rathke, 1799) accepted as Lineus sanguineus (Rathke, 1799) (basis of record)
Strongylocentrotus droebachiensis (O.F. Müller, 1776) (additional source)
Temora longicornis (Müller O.F., 1785) (additional source)
Urosalpinx cinerea (Say, 1822) (additional source)
Urticina felina (Linnaeus, 1761) (additional source)