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List of 673 taxa grouped by families - click on CAAB code to see taxon report.
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Animalia (kingdom)
Cnidaria (phylum)
Hydrozoa (class)
Leptothecata (order)
- Aequorea australis Uchida, 1947 [a hydromedusa] 11 066007
- Aequorea conica Browne, 1905 [a hydromedusa] 11 066009
- Aequorea forskalea Peron & Lesueur, 1810 [a hydromedusa] 11 066010
- Aequorea kurangai Gershwin, Zeidler & Davie, 2010 [a hydromedusa] 11 066003
- Aequorea macrodactyla (Brandt, 1838) [a hydromedusa] 11 066004
- Aequorea parva Browne, 1905 [a hydromedusa] 11 066008
- Aequorea pensilis (Eschscholtz, 1829) [a hydromedusa] 11 066002
- Aequorea spp. [a hydromedusa] 11 066901
- Aldersladia magnificus Gershwin, 2006 [a hydromedusa] 11 066001
- Aldersladia spp. 11 066902
- Aequoreidae hydromedusae 11 066000
- Aglaophenia acanthocarpa Allman, 1876 [a hydroid] 11 064039
- Aglaophenia billardi Bale, 1914 [a hydroid] 11 064036
- Aglaophenia brachiata (Lamarck, 1816) [a hydroid] 11 064022
- Aglaophenia calycifera Bale, 1914 [a hydroid] 11 064046
- Aglaophenia carinifera Bale, 1914 [a hydroid] 11 064006
- Aglaophenia ctenata (Totton, 1930) [a hydroid] 11 064040
- Aglaophenia difficilis Vervoort & Watson, 2003 [a hydroid] 11 064041
- Aglaophenia digitulus Vervoort & Watson, 2003 [a hydroid] 11 064042
- Aglaophenia divaricata divaricata (Busk, 1852) [a hydroid] 11 064007
- Aglaophenia divaricata cystifera Bale, 1915 [a hydroid] 11 064023
- Aglaophenia hystrix Vervoort & Watson, 2003 [a hydroid] 11 064043
- Aglaophenia laxa Allman, 1876 [a hydroid] 11 064044
- Aglaophenia parvula Bale, 1882 [a hydroid] 11 064031
- Aglaophenia plumosa Bale, 1882 [a hydroid] 11 064035
- Aglaophenia postdentata Billard, 1913 [a hydroid] 11 064024
- Aglaophenia pseudoplumosa Watson, 1997 [a hydroid] 11 064025
- Aglaophenia recherchia Watson, 2005 [a hydroid] 11 064026
- Aglaophenia sinuosa Bale, 1888 [a hydroid] 11 064002
- Aglaophenia subspiralis Vervoort & Watson, 2003 [a hydroid] 11 064045
- Aglaophenia tasmanica Bale, 1914 [a hydroid] 11 064037
- Aglaophenia spp. [a hydroid] 11 064901
- Carpocladus fertilis Vervoort & Watson, 2003 [a hydroid] 11 064047
- Carpocladus spp. [a hydroid] 11 064905
- Cladocarpus bathyzonatus Ritchie, 1911 [a hydroid] 11 064071
- Cladocarpus spp. [a hydroid] 11 064909
- Gymnangium ascidioides (Bale, 1882) [a hydroid] 11 064005
- Gymnangium aureum (Watson, 1973) [a hydroid] 11 064027
- Gymnangium australimage Watson, 2005 [a hydroid] 11 064028
- Gymnangium birostratum (Bale, 1914) [a hydroid] 11 064050
- Gymnangium expansum (Jäderholm, 1903) [a hydroid] 11 064048
- Gymnangium explorationis Vervoort & Watson, 2003 [a hydroid] 11 064049
- Gymnangium hians (Busk, 1852) [a hydroid] 11 064011
- Gymnangium humile (Bale, 1884) [a hydroid] 11 064010
- Gymnangium ilicistomum (Bale, 1882) [a hydroid] 11 064029
- Gymnangium japonicum Watson & Vervoort, 2001 [a hydroid] 11 064015
- Gymnangium longirostre (Kirchenpauer, 1876) [a hydroid] 11 064030
- Gymnangium prolifer (Bale, 1882) [a hydroid] 11 064009
- Gymnangium pusillum Watson, 2018 [a hydroid] 11 064052
- Gymnangium superbum (Bale, 1882) [a hydroid] 11 064004
- Gymnangium tubuliferum (Bale, 1914) [a hydroid] 11 064051
- Gymnangium undulatum Watson, 2000 [a hydroid] 11 064013
- Gymnangium vegae (Jäderholm, 2018) [a hydroid] 11 064053
- Gymnangium spp. [a hydroid] 11 064902
- Lytocarpia alata Vervoort & Watson, 2003 [a hydroid] 11 064054
- Lytocarpia angulosa (Lamarck, 1816) [a hydroid] 11 064016
- Lytocarpia billardi (Bale, 1914) [a hydroid] 11 064065
- Lytocarpia brevirostris (Busk, 1852) [a hydroid] 11 064001
- Lytocarpia carinifera (Bale, 1914) [a hydroid] 11 064066
- Lytocarpia chiltoni (Bale, 1924) [a hydroid] 11 064055
- Lytocarpia delicatula (Busk, 1852) [a hydroid] 11 064008
- Lytocarpia epizoica Vervoort & Watson, 2003 [a hydroid] 11 064056
- Lytocarpia howensis (Briggs, 1918) [a hydroid] 11 064057
- Lytocarpia incisa (Coughtrey, 1875) [a hydroid] 11 064058
- Lytocarpia lepida Watson & Vervoort, 2001 [a hydroid] 11 064021
- Lytocarpia megalocarpa (Bale, 1914) [a hydroid] 11 064067
- Lytocarpia orientalis (Billard, 1908) [a hydroid] 11 064014
- Lytocarpia phyteuma (Kirchenpauer, 1876) [a hydroid] 11 064017
- Lytocarpia rigida Vervoort & Watson, 2003 [a hydroid] 11 064059
- Lytocarpia similis Vervoort & Watson, 2003 [a hydroid] 11 064060
- Lytocarpia spiralis (Totton, 1930) [a hydroid] 11 064061
- Lytocarpia striata Vervoort & Watson, 2003 [a hydroid] 11 064062
- Lytocarpia subdichotoma (Ralph, 1961) [a hydroid] 11 064063
- Lytocarpia tenuissima (Bale, 1914) [a hydroid] 11 064038
- Lytocarpia vulgaris Vervoort & Watson, 2003 [a hydroid] 11 064064
- Lytocarpia spp. [a hydroid] 11 064903
- Macrorhynchia ambigua Watson, 2000 [a hydroid] 11 064019
- Macrorhynchia mulderi (Bartlett, 1907) [a hydroid] 11 064033
- Macrorhynchia philippina (Kirchenpauer, 1872) [a hydroid] 11 064003
- Macrorhynchia phoenicea (Busk, 1852) [a hydroid] 11 064018
- Macrorhynchia quadriarmata Watson, 2000 [a hydroid] 11 064020
- Macrorhynchia whiteleggei (Bale, 1888) [a hydroid] 11 064034
- Macrorhynchia spp. [a hydroid] 11 064904
- Monoserius pennarius (Linnaeus, 1758) [a hydroid] 11 064068
- Monoserius spp. [a hydroid] 11 064907
- Taxella gracilicaulis (Jäderholm, 1903) [a hydroid] 11 064032
- Taxella longicornis (Busk, 1852) [a hydroid] 11 064012
- Taxella spp. [a hydroid] 11 064906
- Wanglaophenia longicarpa Vervoort & Watson, 2003 [a hydroid] 11 064069
- Wanglaophenia rostrifrons Vervoort & Watson, 2003 [a hydroid] 11 064070
- Wanglaophenia spp. [a hydroid] 11 064908
- Aglaopheniidae hydroids 11 064000
- Campanularia antarctica Stechow, 1922 [a hydroid] 11 044022
- Campanularia diverticulata (Totton, 1930) [a hydroid] 11 044011
- Campanularia gaussica Stechow, 1923 [a hydroid] 11 044005
- Campanularia hicksoni Totton, 1930 [a hydroid] 11 044007
- Campanularia laminocarpa Millard, 1966 [a hydroid] 11 044023
- Campanularia nuytsensis Watson, 2003 [a hydroid] 11 044006
- Campanularia spp. [a hydroid] 11 044901
- Clytia elongata Marktanner-Turneretscher, 1890 [a hydroid] 11 044027
- Clytia gigantea (Hincks, 1866) [a hydroid] 11 044028
- Clytia gregaria (L. Agassiz, 1862) [a hydroid] 11 044029
- Clytia hemisphaerica (Linnaeus, 1767) [a hydroid] 11 044008
- Clytia linearis (Thornely, 1900) [a hydroid] 11 044009
- Clytia malayense (Kramp, 1961) [a hydroid] 11 044030
- Clytia rangiroae (A. Agassiz & Mayer, 1902) [a hydroid] 11 044031
- Clytia simplex (Browne, 1902) [a hydroid] 11 044032
- Clytia stolonifera Blackburn, 1938 [a hydroid] 11 044014
- Clytia spp. [a hydroid] 11 044902
- Gonothyraea loveni (Allman, 1859) [a hydroid] 11 044018
- Gonothyraea spp. [a hydroid] 11 044903
- Hartlaubella gelatinosa (Pallas, 1766) [a hydroid] 11 044033
- Hartlaubella spp. [a hydroid] 11 044908
- Obelia bidentata Clarke, 1875 [a hydroid] 11 044017
- Obelia dichotoma (Linnaeus, 1758) [a hydroid] 11 044012
- Obelia geniculata (Linnaeus, 1758) [a hydroid] 11 044013
- Obelia longissima (Pallas, 1766) [a hydroid] 11 044034
- Obelia spongicola Watson, 2011 [a hydroid] 11 044010
- Obelia spp. [a hydroid] 11 044904
- Orthopyxis affabilis Vervoort & Watson, 2003 [a hydroid] 11 044025
- Orthopyxis angulata Bale, 1914 [a hydroid] 11 044015
- Orthopyxis caliculata (Hincks, 1853) [a hydroid] 11 044003
- Orthopyxis crenata (Hartlaub, 1901) [a hydroid] 11 044004
- Orthopyxis crenataformis Watson, 2005 [a hydroid] 11 044016
- Orthopyxis frigida Stechow, 1923 [a hydroid] 11 044024
- Orthopyxis integra (MacGillivray, 1842) [a hydroid] 11 044019
- Orthopyxis mollis (Stechow, 1919) [a hydroid] 11 044026
- Orthopyxis spp. [a hydroid] 11 044905
- Silicularia rosea Meyen, 1834 [a hydroid] 11 044021
- Silicularia undulata (Mulder & Trebilcock, 1914) [a hydroid] 11 044002
- Silicularia spp. [a hydroid] 11 044906
- Campanulariidae hydroids 11 044000
- Campanulina cliftonia Watson, 2011 [a hydroid] 11 043004
- Campanulina elata Watson, 2011 [a hydroid] 11 043005
- Campanulina spp. 11 043901
- Cuspidella costata Hincks, 1868 [a hydroid] 11 043003
- Cuspidella spp. 11 043902
- Lafoeina longitheca Jäderholm, 1904 [a hydroid] 11 043007
- Lafoeina spp. [a hydroid] 11 043903
- Opercularella spp. [a hydroid] 11 043904
- Plicatotheca anitae Calder & Vervoort, 1986 [a hydroid] 11 043009
- Plicatotheca spp. [a hydroid] 11 043908
- Stegella lobata (Vanhöffen, 1910) [a hydroid] 11 043008
- Stegella spp. [a hydroid] 11 043906
- Tripoma arboreum Hirohito, 1995 [a hydroid] 11 043002
- Tripoma spp. [a hydroid] 11 043905
- Campanulinidae - undifferentited hydroids 11 043911
- Eirene ceylonensis Browne, 1905 [a hydroid] 11 047001
- Eirene hexanemalis (Goette, 1886) [a hydroid] 11 047002
- Eirene kambara Agassiz & Mayer, 1899 [a hydromedusa] 11 047008
- Eirene menoni Kramp, 1953 [a hydroid] 11 047003
- Eirene palkensis Browne, 1905 [a hydromedusa] 11 047007
- Eirene proboscidea Bouillon & Barnett, 1999 [a hydroid] 11 047009
- Eirene tenuis (Browne, 1904) [a hydroid] 11 047010
- Eirene spp. [a hydroid] 11 047901
- Eutima australis Mayer, 1915 [a hydroid] 11 047004
- Eutima curva Browne, 1905 [a hydromedusa] 11 047006
- Eutima levuka (Agassiz & Mayer, 1899) [a hydromedusa] 11 047005
- Eutima mira McCrady, 1859 [a hydroid] 11 047011
- Eutima spp. [a hydroid] 11 047902
- Phialopsis diegensis Torrey, 1909 [a hydroid] 11 047012
- Phialopsis spp. [a hydroid] 11 047903
- Eirenidae hydroids 11 047000
- Halecium amphibolum Watson, 1993 [a hydroid] 11 050031
- Halecium antarcticum Vanhöffen, 1910 [a hydroid] 11 050014
- Halecium banzare Watson, 2008 [a hydroid] 11 050015
- Halecium beanii (Johnston, 1838) [a hydroid] 11 050035
- Halecium bithecum Watson, 2005 [a hydroid] 11 050021
- Halecium corpulatum Watson, 2012 [a hydroid] 11 050026
- Halecium corrugatissimum Trebilcock, 1928 [a hydroid] 11 050036
- Halecium delicatulum Coughtrey, 1876 [a hydroid] 11 050007
- Halecium dyssymetrum Billard, 1929 [a hydroid] 11 050008
- Halecium elegantulum Watson, 2008 [a hydroid] 11 050017
- Halecium exaggeratum Peña Cantero, Boero & Piraino, 2013 [a hydroid] 11 050027
- Halecium expansum Trebilcock, 1928 [a hydroid] 11 050037
- Halecium fragile Hodgson, 1950 [a hydroid] 11 050013
- Halecium incertus Naumov & Stepanjants, 1962 [a hydroid] 11 050028
- Halecium interpolatum Ritchie, 1907 [a hydroid] 11 050018
- Halecium jaederholmi Vervoort, 1972 [a hydroid] 11 050033
- Halecium lenticulare Trebilcock, 1928 [a hydroid] 11 050032
- Halecium macrocaulus Watson, 2008 [a hydroid] 11 050019
- Halecium obovatum Watson, 2018 [a hydroid] 11 050039
- Halecium ovatum Totton, 1930 [a hydroid] 11 050012
- Halecium pearsonense Watson, 1997 [a hydroid] 11 050022
- Halecium plicatocarpum Vervoort & Watson, 2003 [a hydroid] 11 050038
- Halecium pseudoincertus Peña Cantero, 2014 [a hydroid] 11 050029
- Halecium ralphae Watson & Vervoort, 2001 [a hydroid] 11 050010
- Halecium secundum Jäderholm, 1904 [a hydroid] 11 050030
- Halecium sessile Norman, 1867 [a hydroid] 11 050001
- Halecium spatulum Watson, 2000 [a hydroid] 11 050009
- Halecium tabulatum Watson, 2005 [a hydroid] 11 050023
- Halecium tangaroa Peña Cantero, 2017 [a hydroid] 11 050034
- Halecium tenellum Hincks, 1861 [a hydroid] 11 050011
- Halecium tubatum Watson, 2008 [a hydroid] 11 050020
- Halecium spp. [a hydroid] 11 050901
- Hydrodendron arboreum (Allman, 1888) [a hydroid] 11 050006
- Hydrodendron armatum (Stechow, 1925) [a hydroid] 11 050003
- Hydrodendron australe (Bale, 1919) [a hydroid] 11 050004
- Hydrodendron daidalum (Watson, 1969) [a hydroid] 11 050002
- Hydrodendron dichotomum (Allman, 1888) [a hydroid] 11 050005
- Hydrodendron mirabile (Hincks, 1866) [a hydroid] 11 050025
- Hydrodendron tottoni Rees & Vervoort, 1987 [a hydroid] 11 050040
- Hydrodendron spp. [a hydroid] 11 050902
- Nemalecium lighti (Hargitt, 1924) [a hydroid] 11 050024
- Nemalecium spp. 11 050903
- Haleciidae hydroids 11 050000
- Antennella campanuliformis (Mulder & Trebilcock, 1909) [a hydroid] 11 063003
- Antennella kiwiana Schuchert, 1997 [a hydroid] 11 063013
- Antennella quadriaurita Ritchie, 1909 [a hydroid] 11 063014
- Antennella secundaria (Gmelin, 1791) [a hydroid] 11 063002
- Antennella singulata Watson, 2011 [a hydroid] 11 063009
- Antennella tubulosa (Bale, 1894) [a hydroid] 11 063010
- Antennella spp. [a hydroid] 11 063901
- Antennellopsis integerrima Jäderholm, 1896 [a hydroid] 11 063015
- Antennellopsis spp. [a hydroid] 11 063906
- Corhiza scotiae (Ritchie, 1907) [a hydroid] 11 063016
- Corhiza splendens Vervoort & Watson, 2003 [a hydroid] 11 063017
- Corhiza spp. [a hydroid] 11 063907
- Gattya balei (Bartlett, 1907) [a hydroid] 11 063004
- Gattya spp. 11 063902
- Halopteris campanula (Busk, 1852) [a hydroid] 11 063001
- Halopteris crassa (Billard, 1911) [a hydroid] 11 063018
- Halopteris glutinosa (Lamouroux, 1816) [a hydroid] 11 063008
- Halopteris infundibulum Vervoort, 1966 [a hydroid] 11 063019
- Halopteris minuta (Trebilcock, 1928) [a hydroid] 11 063020
- Halopteris plagiocampa (Pictet, 1893) [a hydroid] 11 063006
- Halopteris polymorpha (Billard, 1913) [a hydroid] 11 063005
- Halopteris prominens Vervoort & Watson, 2003 [a hydroid] 11 063021
- Halopteris pseudoconstricta Millard, 1975 [a hydroid] 11 063022
- Halopteris urceolata Watson, 2015 [a hydroid] 11 063012
- Halopteris spp. [a hydroid] 11 063903
- Monostaechas quadridens (McCrady, 1859) [a hydroid] 11 063011
- Monostaechas spp. [a hydroid] 11 063904
- Halopterididae hydroids 11 063000
- Anthohebella darwinensis Watson, 2000 [a hydroid] 11 068002
- Anthohebella parasitica (Ciamician, 1880) [a hydroid] 11 068003
- Anthohebella spp. [a hydroid] 11 068901
- Halisiphonia prolifica Peña Cantero, 2014 [a hydroid] 11 068013
- Halisiphonia spp. [a hydroid] 11 068905
- Hebella albida Watson, 2011 [a hydroid] 11 068001
- Hebella contorta Marktanner-Turneretscher, 1890 [a hydroid] 11 068007
- Hebella costata (Bale, 1884) [a hydroid] 11 068004
- Hebella dyssymetra Billard, 1931 [a hydroid] 11 068006
- Hebella plana Ritchie, 1907 [a hydroid] 11 068008
- Hebella scandens (Bale, 1888) [a hydroid] 11 068005
- Hebella striata Allman, 1888 [a hydroid] 11 068009
- Hebella spp. [a hydroid] 11 068902
- Staurodiscus gotoi (Uchida, 1927) [a hydroid] 11 068010
- Staurodiscus polynema (Kramp, 1959) [a hydroid] 11 068011
- Staurodiscus spp. [a hydroid] 11 068904
- Hebellidae hydroids 11 068000
- Halicornopsis elegans (Lamarck, 1816) [a hydroid] 11 065003
- Halicornopsis spp. [a hydroid] 11 065901
- Kirchenpaueria bonnevieae (Billard, 1906) [a hydroid] 11 065018
- Kirchenpaueria spp. [a hydroid] 11 065905
- Oswaldella bifurca (Hartlaub, 1904) [a hydroid] 11 065006
- Oswaldella billardi Briggs, 1938 [a hydroid] 11 065007
- Oswaldella blanconae Peña Cantero, 2017 [a hydroid] 11 065008
- Oswaldella erratum Peña Cantero & Vervoort, 1997 [a hydroid] 11 065019
- Oswaldella frigida Peña Cantero & Vervoort, 2004 [a hydroid] 11 065009
- Oswaldella garciacarrascosai Peña Cantero, Svoboda & Vervoort, 1997 [a hydroid] 11 065010
- Oswaldella incognita Peña Cantero, Svoboda & Vervoort, 1997 [a hydroid] 11 065011
- Oswaldella laertesi Peña Cantero, 2007 [a hydroid] 11 065012
- Oswaldella medeae Peña Cantero & Vervoort, 2004 [a hydroid] 11 065013
- Oswaldella occulta Peña Cantero & Molinero, 2018 [a hydroid] 11 065020
- Oswaldella rigida Peña Cantero, Svoboda & Vervoort, 1997 [a hydroid] 11 065014
- Oswaldella terranovae Peña Cantero & Vervoort, 1996 [a hydroid] 11 065016
- Oswaldella tottoni Peña Cantero & Vervoort, 1996 [a hydroid] 11 065017
- Oswaldella spp. [a hydroid] 11 065904
- Pycnotheca mirabilis (Allman, 1883) [a hydroid] 11 065004
- Pycnotheca producta (Bale, 1882) [a hydroid] 11 065001
- Pycnotheca spp. [a hydroid] 11 065902
- Ventromma bellarensis Watson, 2011 [a hydroid] 11 065005
- Ventromma irregularis (Millard, 1958) [a hydroid] 11 065002
- Ventromma spp. 11 065903
- Kirchenpaueriidae hydroids 11 065000
- Acryptolaria angulata (Bale, 1914) [a hydroid] 11 051026
- Acryptolaria conferta (Allman, 1877) [a hydroid] 11 051012
- Acryptolaria corniformis Naumov & Stepanjants, 1962 [a hydroid] 11 051027
- Acryptolaria crassicaulis (Allman, 1888) [a hydroid] 11 051028
- Acryptolaria frigida Peña Cantero, 2014 [a hydroid] 11 051045
- Acryptolaria gracilis (Allman, 1888) [a hydroid] 11 051015
- Acryptolaria longitheca (Allman, 1877) [a hydroid] 11 051046
- Acryptolaria minima Totton, 1930 [a hydroid] 11 051029
- Acryptolaria minuta Watson, 2003 [a hydroid] 11 051014
- Acryptolaria operculata Stepanjants, 1979 [a hydroid] 11 051013
- Acryptolaria spp. [a hydroid] 11 051902
- Billardia hyalina Vervoort & Watson, 2003 [a hydroid] 11 051023
- Billardia novaezealandiae Totton, 2003 [a hydroid] 11 051024
- Billardia subrufa (Jäderholm, 1904) [a hydroid] 11 051022
- Billardia spp. [a hydroid] 11 051905
- Cryptolarella abyssicola (Allman, 1888) [a hydroid] 11 051044
- Cryptolarella spp. [a hydroid] 11 051908
- Filellum annulatum (Watson, 1973) [a hydroid] 11 051019
- Filellum antarcticum (Hartlaub, 1904) [a hydroid] 11 051002
- Filellum conopeum Watson, 2003 [a hydroid] 11 051004
- Filellum magnificum Peña Cantero, Svoboda & Vervoort, 2004 [a hydroid] 11 051020
- Filellum nitidum Watson, 2005 [a hydroid] 11 051017
- Filellum serpens (Hassall, 1848) [a hydroid] 11 051034
- Filellum serratum (Clarke, 1879) [a hydroid] 11 051003
- Filellum spp. [a hydroid] 11 051901
- Lafoea annulata Watson, 2003 [a hydroid] 11 051010
- Lafoea dumosa (Fleming, 1820) [a hydroid] 11 051009
- Lafoea gaussica Vanhöffen, 1910 [a hydroid] 11 051021
- Lafoea tenellula Allman, 1877 [a hydroid] 11 051008
- Lafoea spp. [a hydroid] 11 051903
- Lafoeidae hydroids 11 051911
- Laodicea fijiana Agassiz & Mayer, 1899 [a hydromedusa] 11 052002
- Laodicea indica Browne, 1905 [a hydromedusa] 11 052003
- Laodicea spp. [a hydromedusa] 11 052902
- Melicertissa antrichardsoni Uribe-Palomino & Gershwin in Uribe-Palomino, Pausina & Gershwin, 2018 [a hydromedusa] 11 052005
- Melicertissa orientalis Kramp, 1961 [a hydromedusa] 11 052006
- Melicertissa spp. [a hydromedusa] 11 052903
- Staurophora falklandica Browne, 1907 [a hydroid] 11 052001
- Staurophora spp. 11 052901
- Laodiceidae hydroids 11 052000
- Eucheilota menoni Kramp, 1959 [a hydromedusa] 11 053003
- Eucheilota paradoxica Mayer, 1900 [a hydromedusa] 11 053004
- Eucheilota tropica Kramp, 1959 [a hydromedusa] 11 053005
- Eucheilota spp. [a hydromedusa] 11 053903
- Hydranthea margarica (Hincks, 1862) [a hydroid] 11 053001
- Hydranthea spp. 11 053901
- Lovenella assimilis (Browne, 1905) [a hydromedusa] 11 053006
- Lovenella spp. [a hydromedusa] 11 053904
- Mitrocomium alcoicum (Watson, 1993) [a hydroid] 11 053002
- Mitrocomium spp. [a hydroid] 11 053902
- Paralovenia yongalensis Gershwin & Uribe-Palomino in Uribe-Palomino, Pausina & Gershwin, 2018 [a hydromedusa] 11 053007
- Paralovenia spp. [a hydromedusa] 11 053905
- Lovenellidae hydroids 11 053000
- Cosmetirella davisi (Browne, 1902) [a hydroid] 11 055001
- Cosmetirella spp. [a hydromedusa] 11 055901
- Mitrocomella brownei (Kramp, 1930) [a hydroid] 11 055002
- Mitrocomella frigida (Browne, 1910) [a hydroid] 11 055003
- Mitrocomella niwai Bouillon & Barnett, 1999 [a hydroid] 11 055004
- Mitrocomella spp. [a hydromedusa] 11 055902
- Mitrocomidae hydroids 11 055000
- Cladacanthella scabra (Lamarck, 1816) [a hydroid] 11 058007
- Cladacanthella spp. [a hydroid] 11 058906
- Dentitheca asymmetrica (Bale, 1914) [a hydroid] 11 058021
- Dentitheca spp. 11 058901
- Monotheca amphibola Watson, 2011 [a hydroid] 11 058025
- Monotheca australis (Kirchenpauer, 1876) [a hydroid] 11 058013
- Monotheca epibracteolosa Watson, 1973 [a hydroid] 11 058038
- Monotheca flexuosa (Bale, 1894) [a hydroid] 11 058014
- Monotheca hyalina (Bale, 1882) [a hydroid] 11 058026
- Monotheca obliqua (Johnston, 1847) [a hydroid] 11 058015
- Monotheca pulchella (Bale, 1882) [a hydroid] 11 058027
- Monotheca spinulosa (Bale, 1882) [a hydroid] 11 058016
- Monotheca togata (Watson, 1973) [a hydroid] 11 058028
- Monotheca spp. [a hydroid] 11 058902
- Nemertesia ciliata Bale, 1914 [a hydroid] 11 058039
- Nemertesia cylindrica (Kirchenpauer, 1876) [a hydroid] 11 058017
- Nemertesia cymodocea (Busk, 1851) [a hydroid] 11 058040
- Nemertesia elongata Totton, 1930 [a hydroid] 11 058041
- Nemertesia pinnatifida Vervoort & Watson, 2003 [a hydroid] 11 058042
- Nemertesia procumbens (Spencer, 1891) [a hydroid] 11 058004
- Nemertesia setaceaformis (Mulder & Trebilcock, 1915) [a hydroid] 11 058043
- Nemertesia spp. [a hydroid] 11 058903
- Plumularia anonyma Vervoort & Watson, 2003 [a hydroid] 11 058044
- Plumularia australiensis Watson, 1973 [a hydroid] 11 058019
- Plumularia badia Kirchenpauer, 1876 [a hydroid] 11 058006
- Plumularia billardi Ansín Agís, Ramil & Calder, 2016 [a hydroid] 11 058036
- Plumularia caliculata Bale, 1888 [a hydroid] 11 058045
- Plumularia congregata Vervoort & Watson, 2003 [a hydroid] 11 058046
- Plumularia conjuncta Billard, 1913 [a hydroid] 11 058037
- Plumularia crateriformis Mulder & Trebilcock, 1911 [a hydroid] 11 058022
- Plumularia filicaulis Kirchenpauer, 1876 [a hydroid] 11 058005
- Plumularia filicula Allman, 1877 [a hydroid] 11 058047
- Plumularia flabellum Allman, 1883 [a hydroid] 11 058035
- Plumularia fragilia Watson, 2012 [a hydroid] 11 058030
- Plumularia habereri Strechow, 1909 [a hydroid] 11 058033
- Plumularia insignis Allman, 1983 [a hydroid] 11 058011
- Plumularia meretricia Watson, 1973 [a hydroid] 11 058020
- Plumularia mula Totton, 1936 [a hydroid] 11 058048
- Plumularia opima Bale, 1924 [a hydroid] 11 058049
- Plumularia rotunda Mulder & Trebilcock, 1911 [a hydroid] 11 058031
- Plumularia setacea (Linnaeus, 1758) [a hydroid] 11 058008
- Plumularia setaceoides Bale, 1882 [a hydroid] 11 058023
- Plumularia spirocladia Totton, 1930 [a hydroid] 11 058050
- Plumularia sulcata (Lamarck, 1816) [a hydroid] 11 058024
- Plumularia tenuissima Totton, 1930 [a hydroid] 11 058051
- Plumularia tubacarpa Watson, 2000 [a hydroid] 11 058010
- Plumularia warreni Stechow, 1919 [a hydroid] 11 058029
- Plumularia wattsii Bale, 1887 [a hydroid] 11 058052
- Plumularia spp. [a hydroid] 11 058904
- Polyplumaria bedoti (Billard, 1911) [a hydroid] 11 058009
- Polyplumaria cornuta (Bale, 1884) [a hydroid] 11 058018
- Polyplumaria spp. 11 058905
- Schizoplumularia elegans Ansín Agís, Ramil & Calder, 2016 [a hydroid] 11 058034
- Schizoplumularia spp. [a hydroid] 11 058907
- Plumulariidae hydroids 11 058000
- Schizotricha auroraaustralis Peña Cantero & Fresneda Marzal, 2018 [a hydroid] 11 062005
- Schizotricha falcata Peña Cantero, 1998 [a hydroid] 11 062002
- Schizotricha glacialis (Hickson & Gravely, 1907) [a hydroid] 11 062006
- Schizotricha nana Peña Cantero, Svoboda & Vervoort, 1996 [a hydroid] 11 062003
- Schizotricha turqueti Billard, 1906 [a hydroid] 11 062004
- Schizotricha unifurcata Allman, 1983 [a hydroid] 11 062001
- Schizotricha spp. [a hydroid] 11 062901
- Schizotrichidae hydroids 11 062000
- Calamphora campanulata (Warren, 1908) [a hydroid] 11 059059
- Calamphora quadrispinosa Watson, 2003 [a hydroid] 11 059040
- Calamphora spp. [a hydroid] 11 059902
- Sertularella actidentata Billard, 1919 [a hydroid] 11 059148
- Sertularella areyi Nutting, 1904 [a hydroid] 11 059149
- Sertularella avrilia Watson, 1973 [a hydroid] 11 059014
- Sertularella crassiuscula Bale, 1924 [a hydroid] 11 059150
- Sertularella decipens Billard, 1919 [a hydroid] 11 059017
- Sertularella diaphana (Allman, 1885) [a hydroid] 11 059019
- Sertularella eleganta Watson, 2016 [a hydroid] 11 059156
- Sertularella fuegonensis El Beshbeeshy, 2011 [a hydroid] 11 059151
- Sertularella gayi (Lamouroux, 1822) [a hydroid] 11 059068
- Sertularella geodiae Totton, 1930 [a hydroid] 11 059069
- Sertularella integra Allman, 1876 [a hydroid] 11 059152
- Sertularella leiocarpa (Allman, 1888) [a hydroid] 11 059153
- Sertularella mytila Watson, 2011 [a hydroid] 11 059056
- Sertularella pinnata (Lamouroux, 1816) [a hydroid] 11 059015
- Sertularella quadridens (Bale, 1884) [a hydroid] 11 059018
- Sertularella robusta Coughtrey, 1876 [a hydroid] 11 059016
- Sertularella simplex (Hutton, 1873) [a hydroid] 11 059154
- Sertularella sinensis Jäderholm, 1896 [a hydroid] 11 059155
- Sertularella stolonifera Vervoort & Watson, 2003 [a hydroid] 11 059057
- Sertularella vervoorti El Beshbeeshy, 2011 [a hydroid] 11 059042
- Sertularella spp. [a hydroid] 11 059908
- Sertularellidae hydroids 11 059924
- Amphisbetia bicuspidata (Lamarck, 1816) [a hydroid] 11 059050
- Amphisbetia bispinosa (Gray, 1843) [a hydroid] 11 059117
- Amphisbetia episcopus (Allman, 1876) [a hydroid] 11 059118
- Amphisbetia fasciculata (Kirchenpauer, 1864) [a hydroid] 11 059119
- Amphisbetia macrocarpa (Bale, 1884) [a hydroid] 11 059047
- Amphisbetia maplestonei (Bale, 1884) [a hydroid] 11 059021
- Amphisbetia minima (Thompson, 1879) [a hydroid] 11 059020
- Amphisbetia olseni Watson, 1973 [a hydroid] 11 059022
- Amphisbetia operculata (Linnaeus, 1758) [a hydroid] 11 059120
- Amphisbetia pulchella (Thompson, 1879) [a hydroid] 11 059051
- Amphisbetia trispinosa (Coughtrey, 1875) [a hydroid] 11 059121
- Amphisbetia spp. [a hydroid] 11 059901
- Crateritheca bidens Vervoort & Watson, 2003 [a hydroid] 11 059122
- Crateritheca billardi (Bale, 1915) [a hydroid] 11 059123
- Crateritheca insignis (Thompson, 1879) [a hydroid] 11 059124
- Crateritheca novaezelandiae (Thompson, 1879) [a hydroid] 11 059125
- Crateritheca zelandica (Gray, 1843) [a hydroid] 11 059126
- Crateritheca spp. [a hydroid] 11 059918
- Dictyocladium amplexum Vervoort & Watson, 2003 [a hydroid] 11 059127
- Dictyocladium monilifer (Hutton, 1873) [a hydroid] 11 059128
- Dictyocladium reticulatum (Kirchenpauer, 1884) [a hydroid] 11 059129
- Dictyocladium thuja Vervoort & Watson, 2003 [a hydroid] 11 059130
- Dictyocladium watsonae (Vervoort, 1993) [a hydroid] 11 059131
- Dictyocladium spp. [a hydroid] 11 059919
- Diphasia digitalis (Busk, 1852) [a hydroid] 11 059024
- Diphasia mutulata (Busk, 1852) [a hydroid] 11 059023
- Diphasia subcarinata (Busk, 1852) [a hydroid] 11 059067
- Diphasia spp. [a hydroid] 11 059903
- Dynamena bilamellata Watson, 2000 [a hydroid] 11 059025
- Dynamena crisioides Lamouroux, 1824 [a hydroid] 11 059060
- Dynamena disticha (Bosc, 1802) [a hydroid] 11 059061
- Dynamena mertoni (Stechow & Müller, 1923) [a hydroid] 11 059026
- Dynamena obliqua Lamouroux, 1816 [a hydroid] 11 059062
- Dynamena quadridentata (Ellis & Solander, 1786) [a hydroid] 11 059003
- Dynamena spinea Watson, 2005 [a hydroid] 11 059052
- Dynamena spp. [a hydroid] 11 059904
- Gigantotheca maxima Vervoort & Watson, 2003 [a hydroid] 11 059132
- Gigantotheca raukumarai Vervoort & Watson, 2003 [a hydroid] 11 059133
- Gigantotheca spp. [a hydroid] 11 059920
- Gonaxia australis Vervoort & Watson, 2003 [a hydroid] 11 059134
- Gonaxia constricta (Totton, 1930) [a hydroid] 11 059135
- Gonaxia grandis Vervoort & Watson, 2003 [a hydroid] 11 059136
- Gonaxia immersa Vervoort & Watson, 2003 [a hydroid] 11 059137
- Gonaxia intercalata Vervoort & Watson, 2003 [a hydroid] 11 059138
- Gonaxia tasmanica Watson & Vervoort, 2001 [a hydroid] 11 059046
- Gonaxia spp. [a hydroid] 11 059905
- Idiellana lepida Watson, 2000 [a hydroid] 11 059028
- Idiellana pristis (Lamouroux, 1816) [a hydroid] 11 059027
- Idiellana spp. [a hydroid] 11 059906
- Salacia alata Watson, 2000 [a hydroid] 11 059033
- Salacia bicalycula (Coughtrey, 1876) [a hydroid] 11 059139
- Salacia bidentata Watson, 2000 [a hydroid] 11 059034
- Salacia desmoides (Torrey, 1902) [a hydroid] 11 059002
- Salacia farquhari (Bale, 1924) [a hydroid] 11 059141
- Salacia flavidula Watson, 2000 [a hydroid] 11 059032
- Salacia hexodon (Busk, 1852) [a hydroid] 11 059029
- Salacia macer Vervoort & Watson, 2003 [a hydroid] 11 059142
- Salacia sinuosa (Bale, 1884) [a hydroid] 11 059030
- Salacia spiralis (Trebilcock, 1928) [a hydroid] 11 059140
- Salacia tetracythara Lamouroux, 1816 [a hydroid] 11 059031
- Salacia spp. [a hydroid] 11 059907
- Sertularia balei Briggs, 1922 [a hydroid] 11 059053
- Sertularia borneensis Billard, 1924 [a hydroid] 11 059058
- Sertularia distans (Lamouroux, 1816) [a hydroid] 11 059143
- Sertularia loculosa Busk, 1852 [a hydroid] 11 059063
- Sertularia marginata (Kirchenpauer, 1864) [a hydroid] 11 059048
- Sertularia tenuis Bale, 1884 [a hydroid] 11 059144
- Sertularia trigonostoma Busk, 1852 [a hydroid] 11 059035
- Sertularia tumida Allman, 1877 [a hydroid] 11 059145
- Sertularia unguiculata Busk, 1852 [a hydroid] 11 059049
- Sertularia spp. 11 059909
- Stereotheca elongata (Lamouroux, 1816) [a hydroid] 11 059001
- Stereotheca spp. [a hydroid] 11 059911
- Tasmanaria aegis Watson & Vervoort, 2001 [a hydroid] 11 059044
- Tasmanaria edentula (Bale, 1924) [a hydroid] 11 059146
- Tasmanaria monticola Watson & Vervoort, 2001 [a hydroid] 11 059045
- Tasmanaria pacifica Vervoort & Watson, 2003 [a hydroid] 11 059147
- Tasmanaria spp. [a hydroid] 11 059913
- Thuiaria operculata Watson, 2000 [a hydroid] 11 059036
- Thuiaria plumularioides Watson, 2000 [a hydroid] 11 059037
- Thuiaria spp. 11 059914
- Tridentata distans (Lamouroux, 1816) [a hydroid] 11 059064
- Tridentata turbinata (Lamouroux, 1816) [a hydroid] 11 059065
- Tridentata spp. 11 059915
- Sertulariidae hydroids 11 059921
- Staurotheca antarctica Hartlaub, 1904 [a hydroid] 11 059072
- Staurotheca compressa Briggs, 1938 [a hydroid] 11 059073
- Staurotheca densa Peña Cantero & Vervoort, 2003 [a hydroid] 11 059074
- Staurotheca dichotoma Allman, 1888 [a hydroid] 11 059038
- Staurotheca frigida Peña Cantero, Svoboda & Vervoort, 1997 [a hydroid] 11 059075
- Staurotheca glomulosa Peña Cantero, Svoboda & Vervoort, 1997 [a hydroid] 11 059076
- Staurotheca gracilis Peña Cantero, 2017 [a hydroid] 11 059077
- Staurotheca megalotheca Vervoort & Watson, 2003 [a hydroid] 11 059081
- Staurotheca nonscripta Peña Cantero, Svoboda & Vervoort, 1997 [a hydroid] 11 059078
- Staurotheca pachyclada (Jäderholm, 1904) [a hydroid] 11 059079
- Staurotheca polarsterni Peña Cantero, Svoboda & Vervoort, 1997 [a hydroid] 11 059080
- Staurotheca vanhoeffeni (Peña Cantero, García Carrascosa & Vervoort, 1994) [a hydroid] 11 059039
- Staurotheca spp. [a hydroid] 11 059910
- Staurothecidae hydroids 11 059922
- Antarctoscyphus admirabilis Peña Cantero, Svoboda & Vervoort, 1999 [a hydroid] 11 059082
- Antarctoscyphus elongatus (Jäderholm, 1904) [a hydroid] 11 059083
- Antarctoscyphus grandis (Blanco, 1977) [a hydroid] 11 059084
- Antarctoscyphus mawsoni (Briggs, 1938) [a hydroid] 11 059085
- Antarctoscyphus spiralis (Hickson & Gravely, 1907) [a hydroid] 11 059086
- Antarctoscyphus spp. [a hydroid] 11 059917
- Antarctoscyphys asymmetricus Peña Cantero, García Carrascosa & Vervoort, 1997 [a hydroid] 11 059158
- Bicaularia tongensis (Stechow, 1919) [a hydroid] 11 059004
- Fraseroscyphus irregularis (Trebilcock, 1928) [a hydroid] 11 059070
- Fraseroscyphus macrogonus (Trebilcock, 1928) [a hydroid] 11 059071
- Fraseroscyphus spp. [a hydroid] 11 059916
- Symplectoscyphus aggregatus (Jäderholm, 1917) [a hydroid] 11 059087
- Symplectoscyphus amoenus Vervoort & Watson, 2003 [a hydroid] 11 059099
- Symplectoscyphus anae Peña Cantero, Svoboda & Vervoort, 2002 [a hydroid] 11 059088
- Symplectoscyphus candelabrum Vervoort & Watson, 2003 [a hydroid] 11 059100
- Symplectoscyphus columnarius (Briggs, 1914) [a hydroid] 11 059101
- Symplectoscyphus commensalis Vervoort, 1993 [a hydroid] 11 059066
- Symplectoscyphus confusus Totton, 1930 [a hydroid] 11 059102
- Symplectoscyphus cumberlandicus (Jädherholm, 1905) [a hydroid] 11 059159
- Symplectoscyphus curvatus (Jäderholm, 1917) [a hydroid] 11 059089
- Symplectoscyphus densus Peña Cantero, 2017 [a hydroid] 11 059090
- Symplectoscyphus epizoicus Watson, 1973 [a hydroid] 11 059010
- Symplectoscyphus epizooticus Totton, 1930 [a hydroid] 11 059043
- Symplectoscyphus exochus Blanco, 1982 [a hydroid] 11 059091
- Symplectoscyphus fasciculatus Galea, 2016 [a hydroid] 11 059106
- Symplectoscyphus frondosus Peña Cantero, 2010 [a hydroid] 11 059092
- Symplectoscyphus fuscus (Trebilcock, 1928) [a hydroid] 11 059103
- Symplectoscyphus glacialis (Jäderholm, 1904) [a hydroid] 11 059011
- Symplectoscyphus howensis Vervoort & Watson, 2003 [a hydroid] 11 059104
- Symplectoscyphus indivisus (Bale, 1882) [a hydroid] 11 059054
- Symplectoscyphus johnstoni (Gray, 1843) [a hydroid] 11 059105
- Symplectoscyphus liouvillei (Billard, 1914) [a hydroid] 11 059093
- Symplectoscyphus macroscyphus Vervoort & Watson, 2003 [a hydroid] 11 059107
- Symplectoscyphus naumovi Blanco, 1969 [a hydroid] 11 059094
- Symplectoscyphus neglectus (Thompson, 1879) [a hydroid] 11 059055
- Symplectoscyphus nesioticus Blanco, 1977 [a hydroid] 11 059095
- Symplectoscyphus odontiferus Vervoort & Watson, 2003 [a hydroid] 11 059108
- Symplectoscyphus paulensis Stechow, 1923 [a hydroid] 11 059012
- Symplectoscyphus pirsa Watson, 2018 [a hydroid] 11 059115
- Symplectoscyphus plectilis (Hickson & Gravely, 1907) [a hydroid] 11 059096
- Symplectoscyphus procerus (Trebilcock, 1928) [a hydroid] 11 059109
- Symplectoscyphus pseudodivaricatus Ralph, 1961 [a hydroid] 11 059110
- Symplectoscyphus pygmaeus (Bale, 1882) [a hydroid] 11 059111
- Symplectoscyphus rentoni (Bartlett, 1907) [a hydroid] 11 059112
- Symplectoscyphus sibogae (Billard, 1924) [a hydroid] 11 059005
- Symplectoscyphus spiraliformis Vervoort & Watson, 2003 [a hydroid] 11 059113
- Symplectoscyphus subarticulatus (Coughtrey, 1875) [a hydroid] 11 059114
- Symplectoscyphus subdichotomus (Kirchenpauer, 1884) [a hydroid] 11 059116
- Symplectoscyphus subdichotomus (Kirchenpauer, 1884) [a hydroid] 11 059009
- Symplectoscyphus tuba Totton, 1930 [a hydroid] 11 059013
- Symplectoscyphus vanhoeffeni Totton, 1930 [a hydroid] 11 059097
- Symplectoscyphus weddelli Peña Cantero, Svoboda & Vervoort, 2002 [a hydroid] 11 059098
- Symplectoscyphus spp. [a hydroid] 11 059912
- Symplectoscyphidae hydroids 11 059923
- Hincksella cylindrica (Bale, 1888) [a hydroid] 11 060002
- Hincksella sibogae Billard, 1918 [a hydroid] 11 060006
- Hincksella spp. [a hydroid] 11 060901
- Synthecium brucei Vervoort & Watson, 2003 [a hydroid] 11 060007
- Synthecium campylocarpum Allman, 1888 [a hydroid] 11 060001
- Synthecium carinatum Totton, 1930 [a hydroid] 11 060008
- Synthecium elegans Allman, 1872 [a hydroid] 11 060009
- Synthecium gordoni Vervoort & Watson, 2003 [a hydroid] 11 060010
- Synthecium megathecum Billard, 1925 [a hydroid] 11 060011
- Synthecium orthogonium (Busk, 1852) [a hydroid] 11 060003
- Synthecium patulum (Busk, 1852) [a hydroid] 11 060004
- Synthecium protectum Jäderholm, 1903 [a hydroid] 11 060012
- Synthecium subventricosum Bale, 1914 [a hydroid] 11 060005
- Synthecium tottoni Ralph, 1958 [a hydroid] 11 060013
- Synthecium spp. [a hydroid] 11 060902
- Syntheciidae hydroids 11 060000
- Parascyphus simplex (Lamouroux, 1816) [a hydroid] 11 061005
- Parascyphus spp. [a hydroid] 11 061901
- Symmetroscyphus australis Vervoort & Watson, 2003 [a hydroid] 11 061006
- Symmetroscyphus spp. [a hydroid] 11 061904
- Thyroscyphoides sympodialis Watson, 2003 [a hydroid] 11 061001
- Thyroscyphoides spp. 11 061902
- Thyroscyphus fruticosus (Esper, 1793) [a hydroid] 11 061002
- Thyroscyphus macrocytharus (Lamouroux, 1824) [a hydroid] 11 061003
- Thyroscyphus torresii (Busk, 1852) [a hydroid] 11 061004
- Thyroscyphus spp. [a hydroid] 11 061903
- Thyroscyphidae hydroids 11 061000
- Chromatonema rubrum Fewkes, 1882 [a hydromedusa] 11 041002
- Chromatonema spp. [a hydromedusa] 11 041902
- Modeeria rotunda (Quoy & Gaimard, 1827) [a hydroid] 11 041003
- Modeeria spp. [a hydroid] 11 041903
- Stegolaria geniculata (Allman, 1888) [a hydroid] 11 041001
- Stegolaria irregularis Totton, 1930 [a hydroid] 11 041004
- Stegolaria operculata (Nutting, 1905) [a hydroid] 11 041005
- Stegolaria spp. 11 041901
- Tiarannidae hydroids 11 041000
- Abietinella operculata (Jäderholm, 1903) [a hydroid] 11 051025
- Abietinella spp. [a hydroid] 11 051906
- Cryptolaria exserta Busk, 1858 [a hydroid] 11 051030
- Cryptolaria pectinata (Allman, 1888) [a hydroid] 11 051031
- Cryptolaria prima Busk, 1857 [a hydroid] 11 051032
- Cryptolaria tortuosa Watson, 2018 [a hydroid] 11 051033
- Cryptolaria spp. [a hydroid] 11 051907
- Zygophylax antipathes (Lamarck, 1816) [a hydroid] 11 051035
- Zygophylax binematophoratus Vervoort & Watson, 2003 [a hydroid] 11 051036
- Zygophylax cervicornis (Nutting, 1905) [a hydroid] 11 051037
- Zygophylax concinna (Ritchie, 1911) [a hydroid] 11 051043
- Zygophylax parapacificus Vervoort & Watson, 2003 [a hydroid] 11 051038
- Zygophylax polycarpa Vervoort & Watson, 2003 [a hydroid] 11 051039
- Zygophylax pseudafricanus Vervoort & Watson, 2003 [a hydroid] 11 051040
- Zygophylax sagamiensis Hirohito, 1983 [a hydroid] 11 051011
- Zygophylax sibogae Billard, 1918 [a hydroid] 11 051016
- Zygophylax tizardensis Kirkpatrick, 1890 [a hydroid] 11 051041
- Zygophylax unilateralis Totton, 1930 [a hydroid] 11 051042
- Zygophylax spp. [a hydroid] 11 051904
- Zygophylacidae hydroids 11 051912