Alcyonidium cellarioides Calvet, 1900 (additional source)
Disporella hispida (Fleming, 1828) (additional source)
Haliclona oculata (Linnaeus, 1759) represented as Haliclona (Haliclona) oculata (Linnaeus, 1759) (additional source)
Plagioecia patina (Lamarck, 1816) (additional source)
Scruparia chelata (Linnaeus, 1758) (additional source)
Sycon ciliatum (Fabricius, 1780) (additional source)

Belgian Exclusive Economic Zone for Acanthodoris pilosa (Abildgaard, 1789) 
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 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 Cirratulus cirratus (O. F. Müller, 1776) 
Belgian Exclusive Economic Zone for Cirratulus filiformis Keferstein, 1862 
Belgian Exclusive Economic Zone for Clytia gracilis (M. Sars, 1851) 
Belgian Exclusive Economic Zone for Conopeum reticulum (Linnaeus, 1767) 
Belgian Exclusive Economic Zone for Coryphella verrucosa (M. Sars, 1829) 
Belgian Exclusive Economic Zone for Dendronotus frondosus (Ascanius, 1774) 
Belgian Exclusive Economic Zone for Disporella hispida (Fleming, 1828) 
Belgian Exclusive Economic Zone for Electra pilosa (Linnaeus, 1767) 
Belgian Exclusive Economic Zone for Eubranchus tricolor Forbes, 1838 
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 Laomedea flexuosa Alder, 1857 
Belgian Exclusive Economic Zone for Lepidonotus squamatus (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Monocorophium acherusicum (A. Costa, 1853) 
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 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 virens (Linnaeus, 1758) 
Belgian Exclusive Economic Zone for Pycnogonum littorale (Strøm, 1762) 
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 Sycon ciliatum (Fabricius, 1780) 
Belgian Exclusive Economic Zone for Tergipes tergipes (Forsskål, 1775) 
Belgian Exclusive Economic Zone for Tubularia indivisa Linnaeus, 1758 
Belgian Exclusive Economic Zone for Urticina felina (Linnaeus, 1761) 
North Sea for Halichondria panicea (Pallas, 1766) 
North Sea for Haliclona oculata (Linnaeus, 1759)