Amphilectus fucorum (Esper, 1794) (additional source)
Ancorina radix Marenzeller, 1889 (additional source)
Aplysilla sulfurea Schulze, 1878 (additional source)
Biemna variantia (Bowerbank, 1858) (additional source)
Cliona celata Grant, 1826 (additional source)
Ficulina ficus (Johnston, 1842) accepted as Suberites ficus (Johnston, 1842) (additional source)
Gellius angulatus (Bowerbank, 1866) accepted as Haliclona (Gellius) angulata (Bowerbank, 1866) (additional source)
Grantia compressa (Fabricius, 1780) (additional source)
Halichondria albescens sensu Johnston, 1842 (additional source)
Halichondria panicea (Pallas, 1766) represented as Halichondria (Halichondria) panicea (Pallas, 1766) (additional source)
Halisarca dujardinii Johnston, 1842 (additional source)
Hymedesmia pansa Bowerbank, 1882 represented as Hymedesmia (Hymedesmia) pansa Bowerbank, 1882 (additional source)
Hymeniacidon sanguinea (Grant, 1826) accepted as Hymeniacidon perlevis (Montagu, 1814) (additional source)
Leucandra gossei (Bowerbank, 1862) represented as Leucandra gossei gossei (Bowerbank, 1862) (additional source)
Leucandra nivea (Grant, 1826) accepted as Leuconia nivea (Grant, 1826) (additional source)
Leucosolenia complicata (Montagu, 1814) (additional source)
Mycale (Aegogropila) contarenii (Lieberkühn, 1859) (additional source)
Mycale (Aegogropila) rotalis (Bowerbank, 1874) (additional source)
Mycale (Carmia) macilenta (Bowerbank, 1866) (additional source)
Mycale (Carmia) similaris (Bowerbank, 1874) accepted as Mycale (Carmia) subclavata (Bowerbank, 1866) (additional source)
Myxilla incrustans (Johnston, 1842) represented as Myxilla (Myxilla) incrustans (Johnston, 1842) (additional source)
Pachymatisma johnstonia (Bowerbank in Johnston, 1842) (additional source)
Polymastia mamillaris (Müller, 1806) (additional source)
Pseudosuberites mollis Topsent, 1925 (additional source)
Raspailia ramosa (Montagu, 1814) represented as Raspailia (Raspailia) ramosa (Montagu, 1814) (additional source)
Raspailia ramosa var. pumila (Bowerbank, 1866) accepted as Raspailia (Raspailia) ramosa (Montagu, 1814) (basis of record)
Reniera cinerea (Grant, 1826) accepted as Haliclona (Reniera) cinerea (Grant, 1826) (additional source)
Reniera elegans (Bowerbank, 1866) accepted as Haliclona (Reniera) cinerea (Grant, 1826) (new combination reference)
Reniera fistulosa (Bowerbank, 1866) accepted as Haliclona (Halichoclona) fistulosa (Bowerbank, 1866) (additional source)
Reniera rosea (Bowerbank, 1866) accepted as Haliclona (Rhizoniera) rosea (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)
Stylopus dujardini var. coriaceus (Fristedt, 1885) accepted as Hymedesmia (Stylopus) coriacea (Fristedt, 1885) (additional source)
Suberites massa Nardo, 1847 (additional source)
Sycon coronatum (Ellis & Solander, 1786) accepted as Sycon ciliatum (Fabricius, 1780) (additional source)
Tedania digitata (Schmidt, 1862) accepted as Tedania (Tedania) anhelans (Vio in Olivi, 1792) (additional source)
Terpios fugax Duchassaing & Michelotti, 1864 (additional source)
Tethya aurantium (Pallas, 1766) (additional source)
Vibulinus rigidus (Montagu, 1814) accepted as Stelligera montagui Van Soest & Hooper, 2020 (additional source)

Celtic Seas for Amphilectus fucorum (Esper, 1794) 
Celtic Seas for Ancorina radix Marenzeller, 1889 
Celtic Seas for Aplysilla sulfurea Schulze, 1878 
Celtic Seas for Biemna variantia (Bowerbank, 1858) 
Celtic Seas for Cliona celata Grant, 1826 
Celtic Seas for Ficulina ficus (Johnston, 1842) 
Celtic Seas for Gellius angulatus (Bowerbank, 1866) 
Celtic Seas for Grantia compressa (Fabricius, 1780) 
Celtic Seas for Halichondria albescens sensu Johnston, 1842 
Celtic Seas for Halichondria panicea (Pallas, 1766) 
Celtic Seas for Halisarca dujardinii Johnston, 1842 
Celtic Seas for Hymedesmia pansa Bowerbank, 1882 
Celtic Seas for Hymeniacidon sanguinea (Grant, 1826) 
Celtic Seas for Leucandra gossei (Bowerbank, 1862) 
Celtic Seas for Leucandra nivea (Grant, 1826) 
Celtic Seas for Leucosolenia complicata (Montagu, 1814) 
Celtic Seas for Mycale (Aegogropila) contarenii (Lieberkühn, 1859) 
Celtic Seas for Mycale (Aegogropila) rotalis (Bowerbank, 1874) 
Celtic Seas for Mycale (Carmia) macilenta (Bowerbank, 1866) 
Celtic Seas for Mycale (Carmia) similaris (Bowerbank, 1874) 
Celtic Seas for Myxilla incrustans (Johnston, 1842) 
Celtic Seas for Pachymatisma johnstonia (Bowerbank in Johnston, 1842) 
Celtic Seas for Polymastia mamillaris (Müller, 1806)  (inaccurate)
Celtic Seas for Pseudosuberites mollis Topsent, 1925 
Celtic Seas for Raspailia ramosa (Montagu, 1814) 
Celtic Seas for Raspailia ramosa var. pumila (Bowerbank, 1866) 
Celtic Seas for Reniera cinerea (Grant, 1826) 
Celtic Seas for Reniera elegans (Bowerbank, 1866) 
Celtic Seas for Reniera fistulosa (Bowerbank, 1866) 
Celtic Seas for Reniera rosea (Bowerbank, 1866) 
Celtic Seas for Reniera simulans (Johnston, 1842) 
Celtic Seas for Spongelia fragilis (Montagu, 1814) 
Celtic Seas for Stylopus dujardini var. coriaceus (Fristedt, 1885) 
Celtic Seas for Suberites massa Nardo, 1847 
Celtic Seas for Sycon coronatum (Ellis & Solander, 1786) 
Celtic Seas for Tedania digitata (Schmidt, 1862) 
Celtic Seas for Terpios fugax Duchassaing & Michelotti, 1864  (inaccurate)
Celtic Seas for Tethya aurantium (Pallas, 1766) 
Celtic Seas for Vibulinus rigidus (Montagu, 1814)