Scientific Name	English Name	Distribution	Max. Length (cm)	Year
Abietinaria abietina	Sea fir	Arctic, Atlantic and Paci		1758
Abietinaria alexanderi		Eastern Pacific		1904
Abietinaria alternitheca		Eastern Pacific		1914
Abietinaria amphora		Eastern Pacific		1904
Abietinaria anguina		Eastern Pacific		1857
Abietinaria annulata		Eastern Pacific		1884
Abietinaria compressa		Eastern Pacific		1878
Abietinaria costata		Northeast Atlantic, Easte		1901
Abietinaria crassiparia		Northeast Atlantic, Easte		1960
Abietinaria cruciformis		Northeast Atlantic, Easte		1987
Abietinaria derbeki		Northeast Atlantic, Easte		1914
Abietinaria elsaeoswaldae		Northeast Atlantic, Easte		1923
Abietinaria expansa		Eastern Pacific		1948
Abietinaria filicula	Fern hydroid	Atlantic Ocean, Eastern P		1786
Abietinaria fusca		Atlantic Ocean, Eastern P		1847
Abietinaria gagarae		Atlantic Ocean, Eastern P		1960
Abietinaria gigantea		Eastern Pacific		1876
Abietinaria gracilis		Eastern Pacific		1904
Abietinaria greenei	Fibre-optic hydroid	Eastern Pacific		1860
Abietinaria immersa		Western Central Pacific		1993
Abietinaria inconstans		Eastern Pacific		1876
Abietinaria interversa		Eastern Pacific		1900
Abietinaria juniperus		Eastern Pacific		1884
Abietinaria kincaidi		Atlantic and Pacific Ocea		1901
Abietinaria labrata		Atlantic and Pacific Ocea
Abietinaria macrotheca		Atlantic and Pacific Ocea		1960
Abietinaria melo		Atlantic and Pacific Ocea		1884
Abietinaria merkii		Atlantic and Pacific Ocea		1884
Abietinaria pacifica		Eastern Pacific		1923
Abietinaria pulchra		Atlantic, Pacific and Arc		1904
Abietinaria raritheca		Atlantic, Pacific and Arc		1960
Abietinaria rigida		Eastern Pacific		1911
Abietinaria smirnowi		Eastern Pacific		1914
Abietinaria spiralis		Eastern Pacific		1960
Abietinaria thuiariodies		Atlantic and Pacific Ocea		1876
Abietinaria thuiarioides		Atlantic and Pacific Ocea		1876
Abietinaria traski		Eastern Pacific		1902
Abietinaria trigona		Eastern Pacific		1987
Abietinaria turgida		Atlantic, Pacific and Arc		1876
Abietinaria urceolus		Atlantic, Pacific and Arc
Abietinaria variabilis		Pacific and Arctic Oceans		1876
Amphisbetia avia		Pacific and Arctic Oceans		1975
Amphisbetia bidens		Pacific and Arctic Oceans		1884
Amphisbetia bispinosa		Southwest Pacific		1843
Amphisbetia brevis		Southwest Pacific		1923
Amphisbetia elegans		Southwest Pacific		1884
Amphisbetia episcopus		Southwest Pacific		1876
Amphisbetia erecta		Eastern Pacific		1938
Amphisbetia fasciculata		Southwest Pacific		1864
Amphisbetia furcata		Eastern Pacific		1857
Amphisbetia geminata		Eastern Pacific		1884
Amphisbetia grossedentata		Eastern Pacific		1864
Amphisbetia heteromorpha		Eastern Pacific		1886
Amphisbetia irregularis		Eastern Pacific		1885
Amphisbetia kurilae		Eastern Pacific		1904
Amphisbetia maplestonei		Eastern Pacific		1884
Amphisbetia megalocarpa		Eastern Pacific		1886
Amphisbetia minima		Southwest Pacific		1879
Amphisbetia minuscula		Southwest Pacific		1919
Amphisbetia minuta		Southwest Pacific		1882
Amphisbetia olseni		Southwest Pacific		1973
Amphisbetia operculata	Wiry hydroid	Antarctic, Southwest Atla		1758
Amphisbetia pacifica		Antarctic, Southwest Atla		1931
Amphisbetia ramifera		Eastern Indian Ocean		2019
Amphisbetia recta		Eastern Indian Ocean		1882
Amphisbetia rectitheca		Eastern Indian Ocean		1907
Amphisbetia simplex		Eastern Indian Ocean		1885
Amphisbetia trispinosa		Southwest Pacific		1875
Amphisbetia trochocarpa		Southwest Pacific		1886
Antarctoscyphus admirabilis		Southwest Pacific		1999
Antarctoscyphus asymmetricus		Antarctic Atlantic		1997
Antarctoscyphus biformis		Antarctic Indian Ocean		1905
Antarctoscyphus elongatus		Antarctic.		1904
Antarctoscyphus encarnae		Western Antarctic		1997
Antarctoscyphus fragilis		Western Antarctic		1999
Antarctoscyphus grandis		Western Antarctic		1977
Antarctoscyphus gruzovi		Western Antarctic		1979
Antarctoscyphus mawsoni		Antarctic		1938
Antarctoscyphus spiralis		Antarctic Ocean.		1907
Calamphora campanulata		Antarctic Ocean.		1908
Caminothujaria molukkana		Antarctic Ocean.		1896
Crateritheca acanthostoma		Antarctic Ocean.		1882
Crateritheca bidens		Antarctic Ocean.		2003
Crateritheca crenata		Antarctic Ocean.		1884
Crateritheca insignis		Antarctic Ocean.		1879
Crateritheca novaezelandiae		Antarctic Ocean.		1879
Crateritheca zelandica		Southwest Pacific		1843
Dictyocladium amplexum		Southwest Pacific		2003
Dictyocladium biseriale		Western Central Pacific		1993
Dictyocladium coactum		Western Central Pacific		1923
Dictyocladium flabellum		Western Central Pacific		1904
Dictyocladium moniliferum		Southwest Pacific		1873
Dictyocladium thuja		Southwest Pacific		2003
Dictyocladium watsonae		Western Central Pacific		1993
Diphasia alata		Western Central Pacific		1855
Diphasia alternata		Western Central Pacific		2019
Diphasia attenuata		Western Central Pacific a		1866
Diphasia cauloatheca		Western Central Pacific a		1920
Diphasia corniculata		Eastern Pacific		1860
Diphasia cristata		Eastern Pacific		1920
Diphasia delagei		Eastern Pacific		1912
Diphasia densa		Eastern Pacific		1923
Diphasia digitalis		Western Central Pacific a		1852
Diphasia dubia		Western Central Pacific a		1927
Diphasia fallax		Atlantic and Arctic Ocean		1847
Diphasia inornata		Atlantic and Arctic Ocean		1927
Diphasia margareta		Atlantic and Arctic Ocean		1841
Diphasia minuta		Atlantic and Arctic Ocean		1920
Diphasia mutulata		Atlantic and Arctic Ocean		1852
Diphasia nigra		Northeast Atlantic		1766
Diphasia nuttingi		Northeast Atlantic		1913
Diphasia orientalis		Northeast Atlantic		1920
Diphasia paarmani		Northeast Atlantic		1904
Diphasia palmata		Northeast Atlantic		1905
Diphasia pinaster		Northeast Atlantic		1786
Diphasia pinastrum	Sea pine hydroid	Atlantic Ocean and the Me		1830
Diphasia robusta		Atlantic Ocean and the Me		1943
Diphasia rosacea	Lily hydroid	Northeast Atlantic		1758
Diphasia scalariformis		Northeast Atlantic		1890
Diphasia subcarinata		Northeast Atlantic		1852
Diphasia tetraglochina		Northeast Atlantic		1907
Diphasia thornelyi		Northeast Atlantic		1909
Diphasia tropica		Western Atlantic.		1904
Diphasia varians		Western Atlantic.		1922
Dynamena anceps		Western Atlantic.		1938
Dynamena bilamellata		Western Atlantic.		2000
Dynamena brevis		Western Atlantic.		1935
Dynamena cornicina		Eastern Central Pacific a		1858
Dynamena crisioides	Borderless hydroid	Pacific Ocean and Western		1824
Dynamena dalmasi		Western Atlantic. Tropic		1899
Dynamena decipiens		Western Atlantic. Tropic		1913
Dynamena dispar		Eastern Pacific		1938
Dynamena disticha		Atlantic, Pacific and Arc		1802
Dynamena heterodonta		Indo-Pacific, Southwest A		1922
Dynamena japonica		Indo-Pacific, Southwest A		1920
Dynamena moluccana		Indo-Pacific, Southwest A		1893
Dynamena obliqua		Indo-Pacific, Southwest A		1816
Dynamena ogasawarana		Indo-Pacific, Southwest A		1974
Dynamena opposita		Western Central Pacific		2019
Dynamena pumila	Sea oak	Atlantic Ocean and the Me		1758
Dynamena quadridentata		Pacific Ocean and Western		1786
Dynamena stabilis		Pacific Ocean and Western		1948
Dynamena tropica		Western Atlantic.		1926
Fraseroscyphus sinuosus		Eastern Pacific		1948
Gonaxia amphorifera		Western Central Pacific		1993
Gonaxia ampullacea		Western Central Pacific		1993
Gonaxia anonyma		Western Central Pacific		1993
Gonaxia australis		Western Central Pacific		2003
Gonaxia bulbifera		Western Central Pacific		1993
Gonaxia compacta		Western Central Pacific		1993
Gonaxia complexa		Western Central Pacific		1993
Gonaxia constricta		Western Central Pacific		1930
Gonaxia crassa		Western Central Pacific		1993
Gonaxia crassicaulis		Western Central Pacific		1993
Gonaxia crusgalli		Western Central Pacific		1993
Gonaxia elegans		Western Central Pacific		1993
Gonaxia errans		Western Central Pacific		1993
Gonaxia grandis		Western Central Pacific		2003
Gonaxia immersa		Western Central Pacific		2003
Gonaxia intercalata		Western Central Pacific		2003
Gonaxia intermedia		Western Central Pacific		1993
Gonaxia pachyclados		Western Central Pacific		1993
Gonaxia perplexa		Western Central Pacific		1993
Gonaxia persimilis		Western Central Pacific		1993
Gonaxia robusta		Western Central Pacific		1993
Gonaxia scalariformis		Western Central Pacific		1993
Gonaxia similis		Western Central Pacific		1993
Gonaxia sinuosa		Western Central Pacific		1993
Gonaxia stricta		Western Central Pacific		1993
Gonaxia tasmanica		Western Central Pacific		2001
Hydrallmania clavaformis		Western Central Pacific		2019
Hydrallmania distans	Loose spiral hydroid	Eastern Pacific		1899
Hydrallmania falcata	Sickle hydroid	Atlantic and Pacific Ocea		1758
Hydrallmania franciscana		Eastern Pacific		1857
Hydrallmania plumulifera		Eastern Pacific		1877
Idiellana lepida		Eastern Pacific		2000
Idiellana pristis		Indo-West Pacific and Wes		1816
Papilionella pterophora		Indo-West Pacific and Wes		1993
Parascyphus repens		Southwest Atlantic, South		1904
Parascyphus simplex		Southwest Pacific		1816
Pericladium mirabilis		Atlantic, Pacific and Arc		1873
Pericladium trilateralis		Eastern Pacific		1936
Salacia alata		Eastern Pacific		2000
Salacia bicalycula		Southwest Pacific		1876
Salacia bidentata		Southwest Pacific		2000
Salacia buski		Southwest Pacific		1876
Salacia coronata		Southwest Pacific		1874
Salacia dichotoma		Southwest Pacific		1888
Salacia disjuncta		Southwest Pacific		1964
Salacia distans		Southwest Pacific		1914
Salacia farquhari		Southwest Pacific		1924
Salacia flavidula		Southwest Pacific		2000
Salacia hexodon		Southwest Pacific		1852
Salacia macer		Southwest Pacific		2003
Salacia obliquanoda		Southwest Pacific		1914
Salacia pyriformis		Southwest Pacific		1936
Salacia ramosissima		Southwest Pacific		1885
Salacia sibogae		Southwest Pacific		1924
Salacia spiralis		Southwest Pacific		1928
Salacia tetracythara		Western Central Pacific		1816
Selaginopsis cedrina		Eastern Pacific		1758
Selaginopsis constans		Eastern Pacific		1948
Selaginopsis cylindrica		Eastern Pacific		1877
Selaginopsis fusca		Northeast Atlantic		1847
Selaginopsis hartlaubi		Eastern Pacific		1904
Selaginopsis obsoleta		Eastern Pacific		1778
Selaginopsis pinaster		Eastern Pacific		1783
Selaginopsis triserialis		Eastern Pacific		1878
Sertularella acutidentata		Western Central Pacific		1919
Sertularella africana		Western Central Pacific		1919
Sertularella agulhenis		Western Central Pacific		1964
Sertularella albida		Eastern Pacific		1884
Sertularella amphorifera		Eastern Pacific		1877
Sertularella ampullacea		Southeast Pacific		1938
Sertularella anguina		Western Central Pacific		1993
Sertularella annulata		Western Central Pacific		1888
Sertularella antarctica		Antarctic and Southwest P		1901
Sertularella arbuscula	Planar hydroid	Southeast Atlantic.		1816
Sertularella areyi		Western Central Pacific a		1904
Sertularella argentinica	Bonsai tree hydroid	Southwest Atlantic and So		1991
Sertularella avrilia		Southwest Atlantic and So		1973
Sertularella billardi		Western Central Pacific		1993
Sertularella bipectinata		Western Central Pacific		1993
Sertularella brandti		Western Central Pacific		1912
Sertularella capensis		Western Central Pacific		1957
Sertularella catena		Western Central Pacific a		1888
Sertularella clarkii		Eastern Pacific		1878
Sertularella clausa		Eastern Pacific		1888
Sertularella complexa		Eastern Pacific		1904
Sertularella conella		Pacific Ocean. Subtropic		1920
Sertularella congregata		Pacific Ocean. Subtropic		1964
Sertularella conica		Western Atlantic.		1877
Sertularella costata		Southeast Pacific		1940
Sertularella crassa		Southeast Pacific		1919
Sertularella crassicaulis		Southeast Pacific		1868
Sertularella crassiuscula		Southwest Pacific		1924
Sertularella craticula		Southwest Pacific		1960
Sertularella crenulata		Western Central Pacific		1905
Sertularella curta		Western Central Pacific		2014
Sertularella cylindritheca		Southwest Atlantic		1888
Sertularella decipiens		Eastern Indian Ocean		1919
Sertularella diaphana		Indo-Pacific and Western		1885
Sertularella distans		Pacific Ocean		1816
Sertularella dubia		Pacific Ocean		1907
Sertularella edentula		Southwest Pacific		1924
Sertularella ellisii		Southwest Pacific		1836
Sertularella erecta		Southwest Pacific		1962
Sertularella exigua		Southwest Pacific		1879
Sertularella exilis		Southwest Pacific		1938
Sertularella flabella		Eastern Pacific		1904
Sertularella formosa		Eastern Pacific		1881
Sertularella fuegonensis		Southeast Pacific		2011
Sertularella fusiformis		Southwest Pacific		1861
Sertularella fusoides		Southwest Pacific		1926
Sertularella gaudichaudi		Southwest Pacific		1824
Sertularella gayi		Atlantic Ocean		1821
Sertularella geodiae		Western Central Pacific		1930
Sertularella gigantea		Western Atlantic		1878
Sertularella goliathus		Western Atlantic		1923
Sertularella helenae		Western Central Pacific		1993
Sertularella humilis		Western Central Atlantic.		1943
Sertularella implexa		Western Central Atlantic.		1888
Sertularella inabai		Western Central Atlantic.		1913
Sertularella inconstans		Western Central Atlantic.		1919
Sertularella integra		Southwest Pacific		1876
Sertularella intricata		Western Central Pacific		1919
Sertularella japonica		Western Central Pacific		1926
Sertularella jorgensis		Southeast Pacific		2011
Sertularella keiensis		Southeast Pacific		1925
Sertularella lagena		Antarctic Indian Ocean		1876
Sertularella leiocarpa		Western Central Pacific		1888
Sertularella leiocarpoides		Western Central Pacific		1993
Sertularella levigata		Western Central Pacific		1931
Sertularella magna		Western Central Pacific		1904
Sertularella mediterranea		Western Central Pacific		1901
Sertularella megastoma		Western Central Atlantic.		1904
Sertularella megista		Western Central Atlantic.		1923
Sertularella microtheca		Western Central Atlantic.		1974
Sertularella minuscula		Western Central Atlantic.		1925
Sertularella mirabilis		Western Central Atlantic.		1896
Sertularella miurensis		Western Central Atlantic.		1921
Sertularella moluccana		Southwest Atlantic		1896
Sertularella mutsuensis		Southwest Atlantic		1931
Sertularella natalensis		Southwest Atlantic		1968
Sertularella novaecaledoniae		Western Central Pacific		1993
Sertularella nuttingi		Western Central Pacific		1914
Sertularella ornata		Western Central Pacific		1933
Sertularella paessleri		Western Central Pacific		1901
Sertularella parvula		Western Central Atlantic		1965
Sertularella paucicostata		Western Central Pacific		1993
Sertularella peculiaris		Western Central Atlantic		1974
Sertularella pedrensis		Western Central Atlantic		1904
Sertularella perculiaris		Western Central Atlantic		1974
Sertularella picta		Western Central Atlantic		1834
Sertularella pinnata		Western Central Atlantic		1876
Sertularella pinnigera		Western Central Atlantic
Sertularella polyzonias	Great tooth hydroid	Arctic, Atlantic Ocean, P		1758
Sertularella producta		Arctic, Atlantic Ocean, P		1888
Sertularella pseudocostata		Western Central Pacific		1993
Sertularella pulchra		Western Central Pacific		1923
Sertularella quadrata		Western Central Atlantic.		1895
Sertularella quadridens		Western Pacific and India		1884
Sertularella quadrifida		Western Pacific and India		1901
Sertularella quinquelaminata		Western Pacific and India		1931
Sertularella ramosa		Western Pacific and India		1879
Sertularella reticulata		Western Pacific and India
Sertularella richardsoni		Western Pacific and India		1961
Sertularella robusta		Pacific Ocean		1876
Sertularella robustoides		Pacific Ocean		1915
Sertularella rugosa	Snail trefoil hydroid	Arctic, Northern Pacific		1758
Sertularella sagamina		Arctic, Northern Pacific		1921
Sertularella similis		Arctic, Northern Pacific		1948
Sertularella simplex		Southwest Pacific		1873
Sertularella sinensis		Western Central Pacific		1896
Sertularella sinuosa		Western Central Pacific		1948
Sertularella solitaria		Western Central Pacific		1904
Sertularella spinosa		Western Central Pacific		1884
Sertularella spirifera		Western Central Pacific		1931
Sertularella stolonifera		Western Central Pacific		2003
Sertularella striata		Western Central Pacific		1923
Sertularella tanneri		Eastern Pacific		1904
Sertularella tasmanica		Eastern Pacific		1915
Sertularella tenella		Atlantic, Pacific and Arc		1856
Sertularella thecocarpa		Atlantic, Pacific and Arc		1922
Sertularella tilesii		Atlantic, Pacific and Arc		1884
Sertularella tricuspidata		Northeast Pacific and Nor
Sertularella tridentata		Northeast Pacific and Nor		1816
Sertularella turgida	Turgid garland hydroid	Northeast Pacific.
Sertularella undulitheca		Northeast Pacific.		1959
Sertularella unituba		Northeast Pacific.		1991
Sertularella uruguayensis		Northeast Pacific.		1973
Sertularella valdiviae		Northeast Pacific.		1923
Sertularella wallacei		Northeast Pacific.		1926
Sertularella whitei		Northeast Pacific.		1987
Sertularella xantha		Northeast Pacific.		1923
Sertularella zenkevitchi		Northeast Pacific.		1960
Sertularia albimaris		Northeast Atlantic		1878
Sertularia argentea	Squirrel's tail hydroid	Arctic, Northern Atlantic		1758
Sertularia australis		Arctic, Northern Atlantic		1864
Sertularia bidentata		Arctic, Northern Atlantic		1876
Sertularia borneensis		Arctic, Northern Atlantic		1925
Sertularia brashnikowi		Arctic, Northern Atlantic		1914
Sertularia brunnea		Arctic, Northern Atlantic		1923
Sertularia carolinensis		Western Atlantic		1872
Sertularia ceylonensis		Western Atlantic		1921
Sertularia conferta		Western Atlantic		1864
Sertularia converrucosa		Western Atlantic		1960
Sertularia cuperssina		Northeast Atlantic		1758
Sertularia cupressina	Sea cypress hydroid	Northern Atlantic and the		1758
Sertularia cupressoides		Northeast Atlantic		1876
Sertularia dalli		Atlantic and Pacific Ocea		1904
Sertularia dalmasi		Atlantic and Pacific Ocea		1877
Sertularia desmoides		Atlantic and Pacific Ocea		1902
Sertularia distans		Atlantic and Pacific Ocea		1816
Sertularia drachi		Atlantic and Pacific Ocea		1949
Sertularia elegans		Eastern Pacific		1884
Sertularia fabricii		Atlantic, Pacific and Arc		1893
Sertularia flexilis		Atlantic, Pacific and Arc		1879
Sertularia frigida		Atlantic, Pacific and Arc		1921
Sertularia furcata		Atlantic, Pacific and Arc		1857
Sertularia gracillima		Atlantic, Pacific and Arc		1926
Sertularia hattorii		Atlantic, Pacific and Arc		1940
Sertularia heteroclada		Atlantic, Pacific and Arc		1902
Sertularia humilis		Atlantic, Pacific and Arc		1879
Sertularia intermedia		Atlantic, Pacific and Arc		1913
Sertularia latiuscula		Western Atlantic		1854
Sertularia ligulata		Indo-Pacific and Western		1904
Sertularia linkoi		Indo-Pacific and Western		1914
Sertularia littoralis		Indo-Pacific and Western		1900
Sertularia loculosa		Southwest Atlantic		1852
Sertularia maccallumi		Southwest Atlantic		1907
Sertularia malayensis		Eastern Central Pacific		1925
Sertularia marginata		Southwest Atlantic		1864
Sertularia mediterranea		Southwest Atlantic		1890
Sertularia mirabilis		Arctic, Northern Atlantic		1872
Sertularia nana		Arctic, Northern Atlantic
Sertularia notabilis		Southwest Atlantic		1947
Sertularia nuttingi		Southwest Atlantic		1913
Sertularia operculata		Southwest Pacific		1758
Sertularia orthogonalis		Southwest Pacific		1989
Sertularia perpusilla		Southwest Atlantic		1911
Sertularia plumosa		Eastern Pacific, Northwes		1876
Sertularia plumulifera		Western Atlantic		1877
Sertularia pumila		Western Atlantic
Sertularia robusta		Atlantic, Pacific and Arc		1876
Sertularia rugosissima		Eastern Central Pacific a		1904
Sertularia schmidti		Atlantic and Arctic Ocean		1914
Sertularia secunda		Atlantic and Arctic Ocean		1868
Sertularia similis		Atlantic, Pacific and Arc		1876
Sertularia simplex		Atlantic, Pacific and Arc		1938
Sertularia stabilis		Atlantic, Pacific and Arc		1942
Sertularia staurotheca		Atlantic, Pacific and Arc		1960
Sertularia stechowi		Atlantic, Pacific and Arc		1995
Sertularia stookeyi		Western Central Atlantic
Sertularia tatarica		Western Central Atlantic		1913
Sertularia tenera		Arctic, Atlantic and Paci		1874
Sertularia tenuis		Arctic, Atlantic and Paci		1884
Sertularia tolli		Arctic, Atlantic and Paci		1908
Sertularia tongensis		Eastern Central Pacific		1919
Sertularia trigonostoma		Eastern Central Pacific		1852
Sertularia tumida		Eastern Central Pacific		1877
Sertularia turbinata		Eastern Central Pacific a		1816
Sertularia unguiculata		Southwest Pacific		1852
Sertularia variabilis		Southwest Pacific
Sertularia vervoorti		Southwest Atlantic		1998
Sertularia westindica		Southwest Atlantic
Staurotheca abyssalis		Antarctic Atlantic	7.5 H	2003
Staurotheca affinis		Antarctic Atlantic		1904
Staurotheca amphorophora		Antarctic Atlantic	38 H	1962
Staurotheca antarctica		Circum-Antarctic.	3 WD	1904
Staurotheca australis		Antarctic Atlantic		1997
Staurotheca compressa		Circum-Antarctic.	13 COLD	1938
Staurotheca cornuta		Antarctic Atlantic	9 COLD	1999
Staurotheca densa		Circum-Antarctic.	7 COLD	2003
Staurotheca dichotoma		Western Indian Ocean and	6 COLD	1888
Staurotheca echinocarpa		Antarctic Indian Ocean		1888
Staurotheca frigida		Antarctic.	9 COLD	1997
Staurotheca glomulosa		Antarctic	6 COLD	1997
Staurotheca jaederholmi		Southwest Atlantic, South	12 H	1920
Staurotheca juncea		Antarctic Atlantic		1910
Staurotheca multifurcata		Antarctic Atlantic	48 H	1999
Staurotheca nonscripta		Antarctic-Patagonian.	9 COLD	1997
Staurotheca pachyclada		Antarctic	16 H	1904
Staurotheca plana		Antarctic Atlantic		1997
Staurotheca polarsterni		Antarctic.		1997
Staurotheca profunda		Antarctic Atlantic		2003
Staurotheca stolonifera		Western Antarctic.		1904
Staurotheca undosiparietina		Antarctic Atlantic	32 H	1979
Staurotheca urceolifera		Antarctic Indian Ocean		1884
Staurotheca vanhoeffeni		Circum-Antarctic.		1994
Staurotheca vervoorti		Southwest and Antarctic A	15 DL	1991
Stereotheca elongata		Southwest Pacific		1816
Symplectoscyphus aggregatus		Antarctic Atlantic		1917
Symplectoscyphus amoenus		Antarctic Atlantic		2003
Symplectoscyphus amphoriferus		Western Atlantic		1877
Symplectoscyphus anae		Western Atlantic		2002
Symplectoscyphus annae		Circum-Antarctic.	4.5 H	2002
Symplectoscyphus arboriformis		Circum-Antarctic.		1890
Symplectoscyphus bathyalis		Western Central Pacific a		1972
Symplectoscyphus bathypacificus		Western Central Pacific		1993
Symplectoscyphus candelabrum		Western Central Pacific		2003
Symplectoscyphus columnarius		Southwest Pacific		1914
Symplectoscyphus commensalis		Western Central Pacific		1993
Symplectoscyphus confusus		Western Central Pacific		1930
Symplectoscyphus constrictus		Western Central Pacific		1930
Symplectoscyphus cumberlandicus		Circum-Antarctic.	5 H	1905
Symplectoscyphus curvatus		Circum-Antarctic.		1917
Symplectoscyphus dentiferus		Circum-Antarctic.		1902
Symplectoscyphus divaricatus		Circum-Antarctic.		1852
Symplectoscyphus effusus		Western Central Pacific		1993
Symplectoscyphus elegans		Eastern Pacific		1904
Symplectoscyphus epizoicus		Eastern Pacific		1973
Symplectoscyphus epizooticus		Eastern Pacific		1930
Symplectoscyphus erectus		Eastern Pacific		1938
Symplectoscyphus exochus		Antarctic	6 WD	1982
Symplectoscyphus exsertus		Antarctic		1888
Symplectoscyphus filiformis	Filigree hydroid	Southeast Pacific		1888
Symplectoscyphus frigidus		Western Antarctic.		2002
Symplectoscyphus fuscus		Western Antarctic.		1928
Symplectoscyphus glacialis		Antarctic.	5 WD	1904
Symplectoscyphus hero		Antarctic Atlantic		1977
Symplectoscyphus howensis		Antarctic Atlantic		2003
Symplectoscyphus hozawai		Antarctic Atlantic		1931
Symplectoscyphus hydrallmaniaeformis		Antarctic Atlantic		1914
Symplectoscyphus incisus		Antarctic Atlantic		1938
Symplectoscyphus indivisus		Southwest Pacific		1881
Symplectoscyphus infractus		Southwest Pacific		1884
Symplectoscyphus interruptus		Southwest Pacific		1889
Symplectoscyphus irregularis		Southwest Pacific		1928
Symplectoscyphus johnstoni		Western Pacific		1843
Symplectoscyphus laevis		Western Pacific		1882
Symplectoscyphus levinseni		Eastern Pacific		1904
Symplectoscyphus liouvillei		Western Antarctic-Patagon		1914
Symplectoscyphus macrocarpa		Western Antarctic-Patagon		1918
Symplectoscyphus macrogonus		Western Antarctic-Patagon		1928
Symplectoscyphus macroscyphus		Western Antarctic-Patagon		2003
Symplectoscyphus magellanicus	Zip hydroid	Southwest Atlantic, South		1890
Symplectoscyphus margaritaceus		Southwest Atlantic, South		1885
Symplectoscyphus marionensis		Southwest Atlantic, South		1971
Symplectoscyphus millardi		Southwest Atlantic, South		1979
Symplectoscyphus minutus		Southwest Atlantic, South		1904
Symplectoscyphus multinodus		Southwest Atlantic, South		1948
Symplectoscyphus naumovi		Circum-Antarctic.	2.5 H	1969
Symplectoscyphus neglectus		Circum-Antarctic.		1879
Symplectoscyphus nesioticus		Antarctic Atlantic	1.5 H	1977
Symplectoscyphus odontiferus		Antarctic Atlantic		2003
Symplectoscyphus pallidus		Antarctic Atlantic		1884
Symplectoscyphus paulensis		Southwest Pacific and Ant		1923
Symplectoscyphus pedrensis		Eastern Pacific		1904
Symplectoscyphus pedunculatus		Western Central Pacific		1919
Symplectoscyphus pinnatus		Northwest Atlantic, Pacif		1876
Symplectoscyphus pirsa		Eastern Indian Ocean		2018
Symplectoscyphus plectilis		Circum-Antarctic.	2.5 H	1907
Symplectoscyphus pluma		Circum-Antarctic.		1901
Symplectoscyphus procerus		Circum-Antarctic.		1928
Symplectoscyphus pseudocolumnarius		Western Central Pacific		1993
Symplectoscyphus pseudodivaricatus		Western Central Pacific		1961
Symplectoscyphus pulchellus		Western Central Pacific		1904
Symplectoscyphus pushi		Western Central Pacific		1979
Symplectoscyphus pygmaeus		Southwest Pacific		1882
Symplectoscyphus ralphae		Western Central Pacific		1993
Symplectoscyphus rentoni		Western Central Pacific		1907
Symplectoscyphus ritchiei		Western Central Pacific		1915
Symplectoscyphus rostratus		Western Central Pacific		1973
Symplectoscyphus rubellus		Western Central Pacific		1884
Symplectoscyphus secundus		Western Central Pacific		1884
Symplectoscyphus sibogae		Western Central Pacific		1924
Symplectoscyphus sieboldi		Western Central Atlantic.		1884
Symplectoscyphus sinuosus		Eastern Pacific		1948
Symplectoscyphus sofiae		Antarctic Pacific	7.5 H	2002
Symplectoscyphus spiraliformis		Antarctic Pacific		2003
Symplectoscyphus spiritualis		Antarctic Pacific		1930
Symplectoscyphus subarticulatus		Southwest Pacific		1875
Symplectoscyphus subdichotomus	Bushy hydroid	Indo-Pacific, Southwest A		1884
Symplectoscyphus tricuspidatus		Arctic, Northern Atlantic		1856
Symplectoscyphus trimucronatus		Arctic, Northern Atlantic		1885
Symplectoscyphus tropicus		Arctic, Northern Atlantic		1901
Symplectoscyphus tuba		Western Pacific and South		1930
Symplectoscyphus turgidus		Eastern Pacific		1857
Symplectoscyphus vanhoeffeni		Circum-Antarctic.	5 WD	1930
Symplectoscyphus weddelli		Antarctic Atlantic	2.5 H	2002
Tamarisca tamarisca	Sea tamarisk	Mediterranean, Atlantic a		1758
Tasmanaria aegis		Mediterranean, Atlantic a		2001
Tasmanaria monticola		Mediterranean, Atlantic a		2001
Tasmanaria pacifica		Mediterranean, Atlantic a		2003
Thuiaria acutiloba		Mediterranean, Atlantic a		1884
Thuiaria affinis		Antarctic Indian Ocean		1905
Thuiaria alba		Eastern Pacific		1911
Thuiaria alternans		Eastern Pacific		1952
Thuiaria alternitheca		Eastern Pacific		1893
Thuiaria arctica		Arctic		1899
Thuiaria argentea		Arctic
Thuiaria articulata	Sea spleenwort	Atlantic, Pacific and Arc		1766
Thuiaria breitfussi		Atlantic, Pacific and Arc		1914
Thuiaria carica		Atlantic, Pacific and Arc		1893
Thuiaria cedrina		Atlantic, Pacific and Arc		1758
Thuiaria cornigera		Atlantic, Pacific and Arc		1914
Thuiaria coronifera		Atlantic, Pacific and Arc		1876
Thuiaria cupressoides		Atlantic, Pacific and Arc		1783
Thuiaria cylindrica		Atlantic, Pacific and Arc		1876
Thuiaria desmoides		Eastern Pacific		1902
Thuiaria diffusa		Eastern Pacific		1885
Thuiaria distans		Canada		1914
Thuiaria dubia		Canada		1922
Thuiaria excepticea		Canada		1947
Thuiaria fabricii		Canada		1904
Thuiaria fraseri		Eastern Pacific		1991
Thuiaria gonorhiza		Eastern Pacific		1952
Thuiaria hartlaubi		Eastern Pacific		1904
Thuiaria hippuris		Eastern Pacific		1874
Thuiaria insociabilis		Eastern Pacific		1948
Thuiaria invicea		Eastern Pacific		1960
Thuiaria involuta		Eastern Pacific		1960
Thuiaria kudelini		Eastern Pacific		1960
Thuiaria kurilae		Eastern Pacific		1904
Thuiaria latiuscula		Eastern Pacific
Thuiaria laxa		Atlantic and Arctic Ocean		1874
Thuiaria lebedi		Atlantic and Arctic Ocean		1960
Thuiaria mereschkowskii		Atlantic and Arctic Ocean		1914
Thuiaria nivea		Atlantic and Arctic Ocean		1947
Thuiaria obsoleta		Atlantic and Arctic Ocean		1781
Thuiaria pinaster		Atlantic and Arctic Ocean		1783
Thuiaria pinna		Atlantic and Arctic Ocean		1960
Thuiaria plumiformis		Atlantic and Arctic Ocean		1904
Thuiaria plumulifera		Atlantic and Arctic Ocean
Thuiaria purpurea		Atlantic and Arctic Ocean		1758
Thuiaria robusta		Atlantic and Arctic Ocean
Thuiaria sachalini		Atlantic and Arctic Ocean		1914
Thuiaria similis		Atlantic and Arctic Ocean
Thuiaria simplex		Atlantic and Arctic Ocean		1938
Thuiaria stelleri		Atlantic and Arctic Ocean		1884
Thuiaria subthuja		Atlantic and Arctic Ocean		1947
Thuiaria tenera		Canada
Thuiaria tetrastriata		Canada		1960
Thuiaria thuja	Bottlebrush hydroid	Atlantic, Pacific and Arc		1758
Thuiaria trilateralis		Atlantic, Pacific and Arc		1936
Thuiaria triserialis		Atlantic, Pacific and Arc		1878
Thuiaria wulfiusi		Atlantic, Pacific and Arc		1960
Thuiaria zachsi		Atlantic, Pacific and Arc		1947
Thyroscyphoides biformis		Atlantic, Pacific and Arc		1955
Thyroscyphoides sympodialis		Southwest Pacific		2003
Tridentata flowersi		Western Atlantic		1904
Tridentata marginata		Atlantic and Pacific Ocea		1884
Tridentata tumida		Western Atlantic		1877
Tridentata turbinata		Eastern Pacific and Weste		1816

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Species Identification: Find Species

Family: Sertulariidae (See list of species below)

Family: Sertulariidae

(See list of species below)