Alectona millari Carter, 1879 (additional source)
Clathrina coriacea (Montagu, 1814) (additional source)
Cliona celata Grant, 1826 (additional source)
Cliona vastifica Hancock, 1849 accepted as Pione vastifica (Hancock, 1849) (additional source)
Desmacidon fruticosum (Montagu, 1814) (additional source)
Ficulina ficus (Johnston, 1842) accepted as Suberites ficus (Johnston, 1842) (additional source)
Forcepia fragilis Stephens, 1917 represented as Forcepia (Forcepia) fragilis Stephens, 1917 (original description)
Gellius flagellifer Ridley & Dendy, 1886 accepted as Haliclona (Flagellia) flagellifera (Ridley & Dendy, 1886) (additional source)
Gellius ravus Stephens, 1912 accepted as Haliclona (Gellius) rava (Stephens, 1912) (additional source)
Grantia compressa (Fabricius, 1780) (additional source)
Halichondria panicea (Pallas, 1766) represented as Halichondria (Halichondria) panicea (Pallas, 1766) (additional source)
Halisarca dujardinii Johnston, 1842 (additional source)
Hymedesmia dujardinii (Bowerbank, 1866) accepted as Hymedesmia (Stylopus) coriacea (Fristedt, 1885) (additional source)
Hymedesmia pansa Bowerbank, 1882 represented as Hymedesmia (Hymedesmia) pansa Bowerbank, 1882 (additional source)
Hymedesmia paupertas (Bowerbank, 1866) represented as Hymedesmia (Hymedesmia) paupertas (Bowerbank, 1866) (additional source)
Hymenancora conjungens Lundbeck, 1910 (additional source)
Hymeniacidon caruncula Bowerbank, 1858 accepted as Hymeniacidon perlevis (Montagu, 1814) (additional source)
Laxosuberites ectyoninus Topsent, 1900 accepted as Protosuberites ectyoninus (Topsent, 1900) (additional source)
Laxosuberites incrustans (Hansen, 1885) sensu Stephens, 1915 accepted as Protosuberites stephensae Van Soest & Hooper, 2020 (additional source)
Leucandra nivea (Grant, 1826) accepted as Leuconia nivea (Grant, 1826) (additional source)
Leucosolenia complicata (Montagu, 1814) (additional source)
Microciona laevis Bowerbank, 1866 accepted as Clathria (Microciona) laevis (Bowerbank, 1866) (additional source)
Mycale (Paresperella) atlantica Stephens, 1917 (original description)
Mycale macilenta (Bowerbank, 1866) represented as Mycale (Carmia) macilenta (Bowerbank, 1866) (additional source)
Mycale placoides (Carter, 1876) accepted as Mycale (Mycale) lingua (Bowerbank, 1866) (additional source)
Oceanapia robusta (Bowerbank, 1866) (additional source)
Pachymatisma johnstonia (Bowerbank in Johnston, 1842) (additional source)
Phakellia rugosa (Bowerbank, 1866) (additional source)
Phakellia ventilabrum (Linnaeus, 1767) (additional source)
Plocamia microcionides (Carter, 1876) accepted as Plocamionida microcionides (Carter, 1876) (additional source)
Poecillastra compressa (Bowerbank, 1866) (additional source)
Reniera simulans (Johnston, 1842) accepted as Haliclona (Haliclona) simulans (Johnston, 1842) (additional source)
Spongelia fragilis (Montagu, 1814) accepted as Dysidea fragilis (Montagu, 1814) (additional source)
Suberites carnosus (Johnston, 1842) (additional source)
Sycon ciliatum (Fabricius, 1780) (additional source)
Thenea muricata (Bowerbank, 1858) (additional source)
Tragosia infundibuliformis (Linnaeus, 1759) accepted as Axinella infundibuliformis (Linnaeus, 1759) (additional source)
Tragosia polypoides (Schmidt, 1862) accepted as Axinella dissimilis (Bowerbank, 1866) (new combination reference)

Celtic Seas for Alectona millari Carter, 1879 
Celtic Seas for Clathrina coriacea (Montagu, 1814) 
Celtic Seas for Cliona celata Grant, 1826 
Celtic Seas for Cliona vastifica Hancock, 1849 
Celtic Seas for Desmacidon fruticosum (Montagu, 1814) 
Celtic Seas for Ficulina ficus (Johnston, 1842) 
Celtic Seas for Forcepia fragilis Stephens, 1917 
Celtic Seas for Gellius flagellifer Ridley & Dendy, 1886  (inaccurate)
Celtic Seas for Gellius ravus Stephens, 1912 
Celtic Seas for Grantia compressa (Fabricius, 1780) 
Celtic Seas for Halichondria panicea (Pallas, 1766) 
Celtic Seas for Halisarca dujardinii Johnston, 1842 
Celtic Seas for Hymedesmia dujardinii (Bowerbank, 1866) 
Celtic Seas for Hymedesmia pansa Bowerbank, 1882 
Celtic Seas for Hymedesmia paupertas (Bowerbank, 1866) 
Celtic Seas for Hymenancora conjungens Lundbeck, 1910 
Celtic Seas for Hymeniacidon caruncula Bowerbank, 1858 
Celtic Seas for Laxosuberites ectyoninus Topsent, 1900 
Celtic Seas for Laxosuberites incrustans (Hansen, 1885) sensu Stephens, 1915 
Celtic Seas for Leucandra nivea (Grant, 1826) 
Celtic Seas for Leucosolenia complicata (Montagu, 1814) 
Celtic Seas for Microciona laevis Bowerbank, 1866 
Celtic Seas for Mycale (Paresperella) atlantica Stephens, 1917 
Celtic Seas for Mycale macilenta (Bowerbank, 1866) 
Celtic Seas for Mycale placoides (Carter, 1876) 
Celtic Seas for Oceanapia robusta (Bowerbank, 1866) 
Celtic Seas for Pachymatisma johnstonia (Bowerbank in Johnston, 1842) 
Celtic Seas for Phakellia rugosa (Bowerbank, 1866) 
Celtic Seas for Phakellia ventilabrum (Linnaeus, 1767) 
Celtic Seas for Plocamia microcionides (Carter, 1876) 
Celtic Seas for Poecillastra compressa (Bowerbank, 1866) 
Celtic Seas for Reniera simulans (Johnston, 1842) 
Celtic Seas for Spongelia fragilis (Montagu, 1814) 
Celtic Seas for Suberites carnosus (Johnston, 1842) 
Celtic Seas for Sycon ciliatum (Fabricius, 1780) 
Celtic Seas for Thenea muricata (Bowerbank, 1858) 
Celtic Seas for Tragosia infundibuliformis (Linnaeus, 1759) 
Celtic Seas for Tragosia polypoides (Schmidt, 1862) 
North Atlantic Lower Bathyal Province for Forcepia fragilis Stephens, 1917