Actinia bermudensis (McMurrich, 1889) (additional source)
Actinia equina (Linnaeus, 1758) (additional source)
Actinia fragacea Tugwell, 1856 (additional source)
Actinia prasina Gosse, 1860 (additional source)
Actinia sali Monteiro, Sole-Cava & Thorpe, 1997 (additional source)
Actinia schmidti Monteiro, Sole-Cava & Thorpe, 1997 accepted as Actinia mediterranea Schmidt, 1971 (additional source)
Actinothoe sphyrodeta (Gosse, 1858) (additional source)
Adamsia palliata (Fabricius, 1779) accepted as Calliactis palliata (Müller, 1776) (additional source)
Aiptasia diaphana (Rapp, 1829) accepted as Exaiptasia diaphana (Rapp, 1829) (additional source)
Aiptasia eruptaurantia (Field, 1949) accepted as Aiptasiogeton eruptaurantia (Field, 1949) (additional source)
Aiptasia mutabilis (Gravenhorst, 1831) (additional source)
Aiptasiogeton hyalinus (Delle Chiaje, 1822) (additional source)
Amphianthus dohrnii (Koch, 1878) (additional source)
Andresia partenopea (Andrès, 1883) (additional source)
Anemonia sulcata (Pennant, 1777) (additional source)
Anthopleura ballii (Cocks, 1851) (additional source)
Anthopleura thallia (Gosse, 1854) (additional source)
Bunodactis rubripunctata (Grube, 1840) (additional source)
Bunodactis verrucosa (Pennant, 1777) (additional source)
Bunodosoma biscayensis (Fischer, 1874) accepted as Bunodosoma biscayense (Fischer, 1874) accepted as Anthopleura biscayensis (Fischer, 1874) (additional source)
Calliactis parasitica (Couch, 1842) (additional source)
Cereus pendunculatus accepted as Cereus pedunculatus (Pennant, 1777) (additional source)
Diadumene cincta Stephenson, 1925 (additional source)
Diadumene lighti Hand, 1956 (additional source)
Diadumene luciae (Verrill, 1869) accepted as Diadumene lineata (Verrill, 1869) (additional source)
Edwardsia claparedii (Panceri, 1869) (additional source)
Mesacmaea mitchelli (Gosse, 1853) accepted as Mesacmaea mitchellii (Gosse, 1853) (additional source)
Metridium exilis Hand, 1956 accepted as Metridium exile Hand, 1956 (additional source)
Metridium farcimen (Brandt, 1835) (additional source)
Metridium senile (Linnaeus, 1761) (additional source)
Metridium senile fimbriatum (Verrill) accepted as Metridium senile (Linnaeus, 1761) (additional source)
Metridium senile lobatum (Carlgren, 1899) accepted as Actinothoe lobata (Carlgren, 1899) (additional source)
Paraisometridium pehuense Zamponi, 1978 accepted as Metridium senile (Linnaeus, 1761) (source of synonymy)
Paraisometridium pehuensis Zamponi, 1978 accepted as Paraisometridium pehuense Zamponi, 1978 accepted as Metridium senile (Linnaeus, 1761) (source of synonymy)
Paranemonia cinerea (Contarini, 1844) (additional source)
Sagartia elegans (Dalyell, 1848) accepted as Cylista elegans (Dalyell, 1848) (additional source)
Sagartia elegans aurantiaca (additional source)
Sagartia elegans miniata (additional source)
Sagartia elegans nivea (additional source)
Sagartia elegans rosea (additional source)
Sagartia elegans var. venusta (Gosse) accepted as Sagartia elegans (Dalyell, 1848) accepted as Cylista elegans (Dalyell, 1848) (additional source)
Sagartia ornata (Holdsworth, 1855) accepted as Cylista ornata (Holdsworth, 1855) (additional source)
Sagartia troglodytes (Price in Johnston, 1847) accepted as Cylista troglodytes (Price in Johnston, 1847) (additional source)
Sagartia troglodytes decorata (additional source)
Sagartiogeton undatus (Müller, 1778) accepted as Cylista undata (Müller, 1778) accepted as Sagartia undata (Müller, 1778) (additional source)
Scolanthus callimorphus Gosse, 1853 (additional source)
Telmatactis forskalii (Hemprich & Ehrenberg in Ehrenberg, 1834) (additional source)
Tricnidactis errans De Oliveira Pires, 1987 (additional source)
Urticina eques (Gosse, 1858) (additional source)
Urticina felina (Linnaeus, 1761) (additional source)

Spanish Exclusive Economic Zone for Cereus pendunculatus 
Spanish Exclusive Economic Zone for Metridium senile (Linnaeus, 1761) 
Spanish Exclusive Economic Zone for Metridium senile (Linnaeus, 1761) 
Spanish Exclusive Economic Zone for Sagartia troglodytes (Price in Johnston, 1847) 
Spanish Exclusive Economic Zone for Telmatactis forskalii (Hemprich & Ehrenberg in Ehrenberg, 1834) 
United Kingdom Exclusive Economic Zone for Aiptasiogeton hyalinus (Delle Chiaje, 1822) 

Nontype RMNH Coel. 14484, geounit Spanish Exclusive Economic Zone, identified as Sagartiogeton undatus (Müller, 1778)
Nontype RMNH Coel. 18462, geounit Spanish Exclusive Economic Zone, identified as Sagartiogeton undatus (Müller, 1778)
Nontype RMNH Coel. 18485, geounit Spanish Exclusive Economic Zone, identified as Metridium senile (Linnaeus, 1761)
Nontype RMNH Coel. 18486, geounit Spanish Exclusive Economic Zone, identified as Metridium senile (Linnaeus, 1761)
Nontype RMNH Coel. 18487, geounit Spanish Exclusive Economic Zone, identified as Metridium senile (Linnaeus, 1761)
Nontype RMNH Coel. 18488, geounit Spanish Exclusive Economic Zone, identified as Metridium senile (Linnaeus, 1761)
Nontype RMNH Coel. 18489, geounit Spanish Exclusive Economic Zone, identified as Metridium senile (Linnaeus, 1761)
Nontype RMNH Coel. 18490, geounit Spanish Exclusive Economic Zone, identified as Metridium senile (Linnaeus, 1761)
Nontype RMNH Coel. 18491, geounit Spanish Exclusive Economic Zone, identified as Metridium senile (Linnaeus, 1761)
Nontype RMNH Coel. 18492, geounit Spanish Exclusive Economic Zone, identified as Calliactis parasitica (Couch, 1842)
Nontype RMNH Coel. 18493, geounit Spanish Exclusive Economic Zone, identified as Calliactis parasitica (Couch, 1842)
Unknown type RMNH Coel. 18529, geounit Egyptian Exclusive Economic Zone, identified as Aiptasiogeton hyalinus (Delle Chiaje, 1822)
Nontype RMNH Coel. 18601, geounit Spanish Exclusive Economic Zone, identified as Sagartia elegans (Dalyell, 1848)
Nontype RMNH Coel. 18602 [duplicate], geounit Spanish Exclusive Economic Zone, identified as Sagartia elegans (Dalyell, 1848)
Nontype RMNH Coel. 18602 [duplicate], geounit Spanish Exclusive Economic Zone, identified as Sagartia elegans (Dalyell, 1848)
Nontype RMNH Coel. 18604, geounit Spanish Exclusive Economic Zone, identified as Cereus pendunculatus
Unknown type RMNH Coel. 18615, geounit Spanish Exclusive Economic Zone, identified as Actinothoe sphyrodeta (Gosse, 1858)
Nontype RMNH Coel. 18627, geounit Spanish Exclusive Economic Zone, identified as Aiptasia mutabilis (Gravenhorst, 1831)
Unknown type RMNH Coel. 18629, geounit Spanish Exclusive Economic Zone, identified as Cereus pendunculatus
Unknown type RMNH Coel. 19669, geounit Israeli Exclusive Economic Zone, identified as Aiptasiogeton hyalinus (Delle Chiaje, 1822)
Unknown type RMNH Coel. 19670, geounit Egyptian Exclusive Economic Zone, identified as Aiptasiogeton hyalinus (Delle Chiaje, 1822)
Nontype RMNH Coel. 19800, geounit Faroe Islands, identified as Sagartia ornata (Holdsworth, 1855)
Nontype RMNH Coel. 19801, geounit Faroe Islands, identified as Sagartia ornata (Holdsworth, 1855)
Nontype RMNH Coel. 19895, geounit Portuguese Exclusive Economic Zone, identified as Aiptasiogeton hyalinus (Delle Chiaje, 1822)
Nontype RMNH Coel. 23826, geounit French Exclusive Economic Zone, identified as Actinothoe sphyrodeta (Gosse, 1858)
Unknown type RMNH Coel. 23828, geounit Spanish Exclusive Economic Zone, identified as Aiptasia mutabilis (Gravenhorst, 1831)
Nontype RMNH Coel. 23843, geounit Spanish Exclusive Economic Zone, identified as Sagartia ornata (Holdsworth, 1855)
Nontype RMNH Coel. 23844, geounit Spanish Exclusive Economic Zone, identified as Cereus pendunculatus
Nontype RMNH Coel. 23845, geounit Spanish Exclusive Economic Zone, identified as Cereus pendunculatus
Nontype RMNH Coel. 23934, geounit Spanish Exclusive Economic Zone, identified as Diadumene luciae (Verrill, 1869)
Nontype RMNH Coel. 31242, geounit Spanish Exclusive Economic Zone, identified as Diadumene cincta Stephenson, 1925
Unknown type RMNH Coel. 33129, geounit Portuguese Exclusive Economic Zone, identified as Aiptasiogeton hyalinus (Delle Chiaje, 1822)