Aetea anguina (Linnaeus, 1758) (additional source)
Alcyonium digitatum Linnaeus, 1758 (additional source)
Ampharete acutifrons (Grube, 1860) (additional source)
Amphipholis squamata (Delle Chiaje, 1828) (additional source)
Anobothrus gracilis (Malmgren, 1866) (additional source)
Astarte borealis (Schumacher, 1817) accepted as Tridonta borealis Schumacher, 1817 (additional source)
Botryllus schlosseri (Pallas, 1766) (additional source)
Cerebratulus marginatus [Renier], [1804] (additional source)
Ciona intestinalis (Linnaeus, 1767) (additional source)
Cossura longocirrata Webster & Benedict, 1887 (additional source)
Crisia eburnea (Linnaeus, 1758) (additional source)
Crossaster papposus (Linnaeus, 1767) (additional source)
Dendrodoa grossularia (Van Beneden, 1846) (additional source)
Euchone rubrocincta (Sars, 1862) (additional source)
Eucratea loricata (Linnaeus, 1758) (additional source)
Eudorella truncatula (Bate, 1856) (additional source)
Halichondria bowerbanki Burton, 1930 represented as Halichondria (Halichondria) bowerbanki Burton, 1930 (additional source)
Hydractinia echinata (Fleming, 1828) (additional source)
Hyperia galba (Montagu, 1813) (additional source)
Laomedea neglecta Alder, 1856 (additional source)
Laonice cirrata (M. Sars, 1851) (additional source)
Limnoria lignorum (Rathke, 1799) (additional source)
Melinna cristata (M. Sars, 1851) (additional source)
Molgula citrina Alder & Hancock, 1848 (additional source)
Molgula manhattensis (De Kay, 1843) (additional source)
Myriochele heeri Malmgren, 1867 (additional source)
Myxicola infundibulum (Montagu, 1808) (additional source)
Nemertesia antennina (Linnaeus, 1758) (additional source)
Nicolea venustula (Montagu, 1819) (additional source)
Notoplana atomata (Müller OF, 1776) (additional source)
Oenopota turricula (Montagu, 1803) accepted as Propebela turricula (Montagu, 1803) (additional source)
Opercularella lacerata (Johnston, 1847) (additional source)
Ophiopholis aculeata (Linnaeus, 1767) (additional source)
Owenia fusiformis Delle Chiaje, 1844 (additional source)
Pedicellina cernua (Pallas, 1774) (additional source)
Phascolion strombi (Montagu, 1804) accepted as Phascolion (Phascolion) strombus strombus (Montagu, 1804) (additional source)
Pherusa plumosa (Müller, 1776) (additional source)
Polycarpa fibrosa (Stimpson, 1852) (additional source)
Polyphysia crassa (Örsted, 1843) (additional source)
Praxillella praetermissa (Malmgren, 1865) (additional source)
Prionospio steenstrupi Malmgren, 1867 (additional source)
Protodorvillea kefersteini (McIntosh, 1869) (additional source)
Scalibregma inflatum Rathke, 1843 (additional source)
Strongylocentrotus droebachiensis (O.F. Müller, 1776) (additional source)
Urticina felina (Linnaeus, 1761) (additional source)