Alcyonidium cellarioides Calvet, 1900 (additional source)
Alcyonidium hydrocoalitum Porter, 2004 (additional source)
Callipallene emacinata (Dohrn, 1881) accepted as Callipallene emaciata (Dohrn, 1881) (additional source)
Crisia aculeata Hassall, 1841 (additional source)
Cyanea lamarckii Péron & Lesueur, 1810 (additional source)
Disporella hispida (Fleming, 1828) (additional source)
Dysidea fragilis (Montagu, 1814) (additional source)
Esperiopsis fucorum (Esper, 1794) accepted as Amphilectus fucorum (Esper, 1794) (additional source)
Haliclona oculata (Linnaeus, 1759) represented as Haliclona (Haliclona) oculata (Linnaeus, 1759) (additional source)
Hymeniacidon perlevis (Montagu, 1814) (additional source)
Mycale (Carmia) macilenta (Bowerbank, 1866) (additional source)
Myxilla rosacea (Lieberkühn, 1859) represented as Myxilla (Myxilla) rosacea (Lieberkühn, 1859) (additional source)
Nolella pusilla (Hincks, 1880) (additional source)
Panolicella nutans Jebram, 1985 (additional source)
Phorbas plumosus (Montagu, 1814) (additional source)
Plagioecia patina (Lamarck, 1816) (additional source)
Procerastea perieri Gravier, 1900 accepted as Procerastea nematodes Langerhans, 1884 (additional source)
Scruparia chelata (Linnaeus, 1758) (additional source)
Sphaerodoropsis flavum [auct. lapsus] accepted as Sphaerodorum gracilis (Rathke, 1843) (additional source)
Sycon ciliatum (Fabricius, 1780) (additional source)
Tritonia manicata Deshayes, 1853 accepted as Candiella manicata (Deshayes, 1853) (additional source)
Vesicularia spinosa (Linnaeus, 1758) (additional source)

Belgian Exclusive Economic Zone for Acanthodoris pilosa (Abildgaard, 1789) 
Belgian Exclusive Economic Zone for Actinothoe sphyrodeta (Gosse, 1858) 
Belgian Exclusive Economic Zone for Alentia gelatinosa (M. Sars, 1835) 
Belgian Exclusive Economic Zone for Ascidiella scabra (Müller, 1776) 
Belgian Exclusive Economic Zone for Asterias rubens Linnaeus, 1758 
Belgian Exclusive Economic Zone for Balanus crenatus Bruguière, 1789 
Belgian Exclusive Economic Zone for Bicellariella ciliata (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Bougainvillia muscus (Allman, 1863) 
Belgian Exclusive Economic Zone for Bugula turbinata Alder, 1857 
Belgian Exclusive Economic Zone for Callipallene emaciata (Dohrn, 1881) 
Belgian Exclusive Economic Zone for Calycella syringa (Linnaeus, 1767) 
Belgian Exclusive Economic Zone for Campanularia volubilis (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Catriona gymnota (Couthouy, 1838) 
Belgian Exclusive Economic Zone for Cerithiopsis tubercularis (Montagu, 1803) 
Belgian Exclusive Economic Zone for Cirratulus cirratus (O. F. Müller, 1776) 
Belgian Exclusive Economic Zone for Cirratulus filiformis Keferstein, 1862 
Belgian Exclusive Economic Zone for Clavelina lepadiformis (Müller, 1776) 
Belgian Exclusive Economic Zone for Clytia gracilis (M. Sars, 1851) 
Belgian Exclusive Economic Zone for Conopeum reticulum (Linnaeus, 1767) 
Belgian Exclusive Economic Zone for Conopeum seurati (Canu, 1928) 
Belgian Exclusive Economic Zone for Coryphella verrucosa (M. Sars, 1829) 
Belgian Exclusive Economic Zone for Crisia aculeata Hassall, 1841 
Belgian Exclusive Economic Zone for Cyanea lamarckii Péron & Lesueur, 1810 
Belgian Exclusive Economic Zone for Dendronotus frondosus (Ascanius, 1774) 
Belgian Exclusive Economic Zone for Disporella hispida (Fleming, 1828) 
Belgian Exclusive Economic Zone for Doto pinnatifida (Montagu, 1804) 
Belgian Exclusive Economic Zone for Electra pilosa (Linnaeus, 1767) 
Belgian Exclusive Economic Zone for Eubranchus tricolor Forbes, 1838 
Belgian Exclusive Economic Zone for Eulalia fucescens [auct. misspelling] 
Belgian Exclusive Economic Zone for Eulalia ornata Saint-Joseph, 1888 
Belgian Exclusive Economic Zone for Facelina bostoniensis (Couthouy, 1838) 
Belgian Exclusive Economic Zone for Gattyana cirrhosa (Pallas, 1766) 
Belgian Exclusive Economic Zone for Harmothoe extenuata (Grube, 1840) 
Belgian Exclusive Economic Zone for Heteranomia squamula (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Hydractinia echinata (Fleming, 1828) 
Belgian Exclusive Economic Zone for Hydrallmania falcata (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Inachus phalangium (Fabricius, 1775) 
Belgian Exclusive Economic Zone for Janira maculosa Leach, 1814 
Belgian Exclusive Economic Zone for Jassa herdmani (Walker, 1893) 
Belgian Exclusive Economic Zone for Laomedea flexuosa Alder, 1857 
Belgian Exclusive Economic Zone for Lepidonotus squamatus (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Lomanotus marmoratus (Alder & Hancock, 1845) 
Belgian Exclusive Economic Zone for Macropodia parva Van Noort & Adema, 1985 
Belgian Exclusive Economic Zone for Melita hergensis Reid, 1939 
Belgian Exclusive Economic Zone for Molgula occulta Kupffer, 1875 
Belgian Exclusive Economic Zone for Monocorophium acherusicum (A. Costa, 1853) 
Belgian Exclusive Economic Zone for Nassarius incrassatus (Strøm, 1768) 
Belgian Exclusive Economic Zone for Nemertesia antennina (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Nereis pelagica Linnaeus, 1758 
Belgian Exclusive Economic Zone for Nereis zonata Malmgren, 1867 
Belgian Exclusive Economic Zone for Nolella pusilla (Hincks, 1880) 
Belgian Exclusive Economic Zone for Nymphon rubrum Hodge, 1864 
Belgian Exclusive Economic Zone for Obelia dichotoma (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Obelia longissima (Pallas, 1766) 
Belgian Exclusive Economic Zone for Oerstedia dorsalis (Abildgaard, 1806) 
Belgian Exclusive Economic Zone for Phyllodoce (Anaitides) maculata (Linnaeus, 1767) 
Belgian Exclusive Economic Zone for Plagioecia patina (Lamarck, 1816) 
Belgian Exclusive Economic Zone for Pollachius pollachius (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Pollachius virens (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Polydora hoplura Claparède, 1868 
Belgian Exclusive Economic Zone for Procerastea nematodes Langerhans, 1884 
Belgian Exclusive Economic Zone for Pseudoprotella phasma (Montagu, 1804) 
Belgian Exclusive Economic Zone for Pycnogonum littorale (Strøm, 1762) 
Belgian Exclusive Economic Zone for Sagartiogeton undatus (Müller, 1778) 
Belgian Exclusive Economic Zone for Sarsia eximia (Allman, 1859) 
Belgian Exclusive Economic Zone for Sarsia tubulosa (M. Sars, 1835) 
Belgian Exclusive Economic Zone for Scoloplos (Scoloplos) armiger (Müller, 1776) 
Belgian Exclusive Economic Zone for Scrupocellaria scruposa (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Sertularia cupressina Linnaeus, 1758 
Belgian Exclusive Economic Zone for Spondyliosoma cantharus (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Subadyte pellucida (Ehlers, 1864) 
Belgian Exclusive Economic Zone for Sycon ciliatum (Fabricius, 1780) 
Belgian Exclusive Economic Zone for Tergipes tergipes (Forsskål, 1775) 
Belgian Exclusive Economic Zone for Tritonia plebeia G. Johnston, 1828 
Belgian Exclusive Economic Zone for Trivia monacha (da Costa, 1778) 
Belgian Exclusive Economic Zone for Tubularia indivisa Linnaeus, 1758 
Belgian Exclusive Economic Zone for Tubularia larynx Ellis & Solander, 1786 
Belgian Exclusive Economic Zone for Urticina felina (Linnaeus, 1761) 
Belgian Exclusive Economic Zone for Venerupis geographica (Gmelin, 1791) 
Belgian Exclusive Economic Zone for Verruca stroemia (O.F. Müller, 1776) 
Belgian Exclusive Economic Zone for Vesicularia spinosa (Linnaeus, 1758) 
Kilmore for Pagurus cuanensis Bell, 1845 
Kilmore for Phorbas plumosus (Montagu, 1814) 
Kilmore for Tritonia manicata Deshayes, 1853 
North Sea for Dysidea fragilis (Montagu, 1814) 
North Sea for Esperiopsis fucorum (Esper, 1794) 
North Sea for Halichondria panicea (Pallas, 1766) 
North Sea for Haliclona oculata (Linnaeus, 1759) 
North Sea for Hymeniacidon perlevis (Montagu, 1814) 
North Sea for Mycale (Carmia) macilenta (Bowerbank, 1866) 
North Sea for Myxilla rosacea (Lieberkühn, 1859) 
North Sea for Phorbas plumosus (Montagu, 1814)