Amphilectus incrustans (Johnston, 1842) accepted as Myxilla (Myxilla) incrustans (Johnston, 1842) (new combination reference)
Ascaltis contorta (Bowerbank, 1866) accepted as Ascandra contorta (Bowerbank, 1866) (new combination reference)
Ascaltis lacunosa (Johnston, 1842) accepted as Clathrina lacunosa (Johnston, 1842) (new combination reference)
Axinella mammillata Hanitsch, 1890 accepted as Polymastia spinula Bowerbank, 1866 (original description)
Chalina gracilenta Bowerbank, 1866 accepted as Chalinula limbata (Montagu, 1814) (additional source)
Chalina montaguii (Fleming, 1828) accepted as Haliclona (Reniera) cinerea (Grant, 1826) (additional source)
Clathria seriata (sensu Johnston, 1842) accepted as Ophlitaspongia papilla Bowerbank, 1866 (additional source)
Cliona celata Grant, 1826 (basis of record)
Esperella floreum (Bowerbank, 1866) accepted as Mycale (Carmia) macilenta (Bowerbank, 1866) (new combination reference)
Halisarca rubra Hanitsch, 1890 accepted as Aplysilla rubra (Hanitsch, 1890) (original description)
Leucaltis impressa Hanitsch, 1890 accepted as Aphroceras ensata (Bowerbank, 1858) (original description)
Plumohalichondria atrasanguinea (Bowerbank, 1862) accepted as Clathria (Microciona) atrasanguinea (Bowerbank, 1862) (basis of record)
Polymastia mamillaris (Müller, 1806) (additional source)
Polymastia robusta Bowerbank, 1862 accepted as Polymastia boletiformis (Lamarck, 1815) (additional source)
Raspailia rigida (Montagu, 1814) accepted as Stelligera montagui Van Soest & Hooper, 2020 (additional source)
Raspailia ventilabrum (Bowerbank, 1866) represented as Raspailia (Raspailia) ventilabrum (Bowerbank, 1866) (additional source)
Reniera ingalli (Bowerbank, 1874) accepted as Haliclona (Haliclona) simulans (Johnston, 1842) (new combination reference)
Reniera varians (Bowerbank, 1866) accepted as Haliclona (Reniera) cinerea (Grant, 1826) (additional source)
Spongelia fragilis (Montagu, 1814) accepted as Dysidea fragilis (Montagu, 1814) (additional source)
Suberites domuncula (Olivi, 1792) (additional source)
Suberites ficus (Johnston, 1842) (additional source)
Tethya lyncurium (Linnaeus, 1767) accepted as Tethya aurantium (Pallas, 1766) (additional source)

Celtic Seas for Amphilectus incrustans (Johnston, 1842) 
Celtic Seas for Axinella mammillata Hanitsch, 1890 
Celtic Seas for Chalina gracilenta Bowerbank, 1866 
Celtic Seas for Chalina montaguii (Fleming, 1828) 
Celtic Seas for Clathria seriata (sensu Johnston, 1842) 
Celtic Seas for Cliona celata Grant, 1826 
Celtic Seas for Esperella floreum (Bowerbank, 1866) 
Celtic Seas for Halisarca rubra Hanitsch, 1890 
Celtic Seas for Leucaltis impressa Hanitsch, 1890 
Celtic Seas for Plumohalichondria atrasanguinea (Bowerbank, 1862) 
Celtic Seas for Polymastia mamillaris (Müller, 1806)  (inaccurate)
Celtic Seas for Polymastia robusta Bowerbank, 1862 
Celtic Seas for Raspailia rigida (Montagu, 1814) 
Celtic Seas for Raspailia ventilabrum (Bowerbank, 1866) 
Celtic Seas for Reniera ingalli (Bowerbank, 1874) 
Celtic Seas for Spongelia fragilis (Montagu, 1814) 
Celtic Seas for Suberites domuncula (Olivi, 1792) 
Celtic Seas for Suberites ficus (Johnston, 1842) 
Celtic Seas for Tethya lyncurium (Linnaeus, 1767)