Scientific Name	English Name	Distribution	Max. Length (cm)	Year
Agglutinaria operculata				1987
Anarthroclada parmata				1955
Antennella africana				1914
Antennella allmani				1879
Antennella avalonia		Eastern Pacific		1902
Antennella biarmata		Eastern Pacific		1927
Antennella billardi		Eastern Pacific		2021
Antennella compacta		Eastern Pacific		1938
Antennella curvitheca		Eastern Pacific		1937
Antennella kiwiana		Eastern Pacific		1997
Antennella megatheca		Western Central Pacific		2009
Antennella microscopica		Western Central Pacific		1909
Antennella quadriaurita		Atlantic, Caribbean and P		1909
Antennella recta		Atlantic, Caribbean and P		1927
Antennella secundaria	Sessile hydrozoans	Atlantic and Pacific Ocea		1791
Antennella siliquosa		Western Central Pacific
Antennella sinuosa		Western Central Pacific		2009
Antennella tubulosa		Western Central Pacific		1894
Antennella varians		Western Central Pacific		1911
Anthohebella brevitheca		Western Central Pacific		1938
Anthohebella darwinensis		Western Central Pacific		2000
Anthohebella najimaensis		Western Central Pacific		1995
Anthohebella parasitica		Indo-Pacific.		1880
Anthohebella tubitheca		Indo-Pacific.		1975
Astrolabia furcata		Indo-Pacific.		1937
Billardia hyalina		Indo-Pacific.		2003
Billardia intermedia		Indo-Pacific.		1967
Callicarpa gracilis		Indo-Pacific.		1881
Calvinia mirabilis		Indo-Pacific.		1900
Campalecium alcoicum		Indo-Pacific.		1993
Corhiza bellicosa		Indo-Pacific.		1962
Corhiza complexa		Indo-Pacific.		1905
Corhiza fascicularis		Indo-Pacific.		1883
Corhiza pannosa		Indo-Pacific.		1962
Corhiza patula		Indo-Pacific.		2020
Corhiza scotiae		Indo-Pacific.		1907
Corhiza sociabilis		Indo-Pacific.		1980
Corhiza splendens		Indo-Pacific.		2003
Corhiza suensoni		Indo-Pacific.		1896
Cryptolaria rigida		Western Central Atlantic.		1940
Cryptolaria spinosa		Western Central Atlantic.		1980
Dentitheca bidentata		Western Central Atlantic.		1920
Dentitheca hertwigi		Western Central Atlantic.		1909
Diplopteroides grandis		Western Central Atlantic.		1900
Diplopteroides longipinna		Western Central Atlantic.		1900
Eucheilota birabeni		Western Central Atlantic.		1962
Filellum adhaerens		Western Central Atlantic.		1901
Filellum parasiticum		Western Central Atlantic.		1987
Foersteria bruuni		Western Central Atlantic.		1969
Gattya aglaopheniaformis		Western Central Atlantic.		1909
Gattya balei		Western Central Atlantic.		1907
Gattya conspecta		Western Central Atlantic.		1907
Gattya heurteli		Western Central Atlantic.		1907
Gattya humilis		Western Central Atlantic.		1886
Gattya multithecata		Western Central Atlantic.		1922
Gattya trebilcocki		Western Central Atlantic.		1973
Gattya tropicalis		Western Central Atlantic.		1973
Gattya wimleni		Western Central Atlantic.		1998
Halopteris alternata		Atlantic and Pacific Ocea		1900
Halopteris australis		Central Pacific		2018
Halopteris billardi		Central Pacific		1951
Halopteris brasiliensis		Southwest Atlantic		2018
Halopteris carinata		Western Atlantic.		1877
Halopteris catharina		Northeast Atlantic		1833
Halopteris clarkei		Western Atlantic		1900
Halopteris concava		Western Atlantic		1911
Halopteris constricta		Indo-Pacific and Southeas		1930
Halopteris crassa		Indo-Pacific and Southeas		1911
Halopteris diaphana		Central Pacific and Weste		1868
Halopteris enersis	Enersis hydroid	Southeast Pacific		2006
Halopteris everta		Southeast Pacific		1909
Halopteris gemellipara		Southeast Pacific		1962
Halopteris geminata		Western Atlantic		1877
Halopteris glutinosa		Indo-Pacific.		1816
Halopteris gracilis		Indo-Pacific.		1879
Halopteris jedani		Indo-Pacific.		1913
Halopteris liechtensternii		Indo-Pacific.		1890
Halopteris opposita		Indo-Pacific.		1911
Halopteris peculiaris		Western Central Pacific		1913
Halopteris plagiocampa		Western Central Pacific		1893
Halopteris platygonotheca		Western Central Pacific		1997
Halopteris prominens		Western Central Pacific		2003
Halopteris pseudoconstricta		Western Central Pacific		1975
Halopteris regressa		Western Central Pacific		1918
Halopteris rostrata		Western Central Pacific		1975
Halopteris schucherti	Schuchert's hydroid	Southeast Pacific		2006
Halopteris simplex		Southeast Pacific		1914
Halopteris tenella	Plume hydroid	Atlantic and Pacific Ocea		1874
Halopteris tuba		Atlantic and Pacific Ocea		1876
Halopteris valdiviae		Atlantic and Pacific Ocea		1923
Halopteris violae		Southeast Pacific		2003
Halopteris zygocladia		Southeast Pacific		1914
Hippurella elegans		Southeast Pacific		1937
Hydranthea aloysii		Southeast Pacific		1893
Hydranthea margarica		Northeast Atlantic		1862
Hydranthea phialiformis		Northeast Atlantic		1983
Lafoea weddelli		Northeast Atlantic		1991
Lineolaria flexuosa		Northeast Atlantic		1884
Lineolaria spinulosa		Northeast Atlantic		1861
Malagazzia condensum		Northeast Atlantic		1953
Malagazzia multitentaculatum		Northeast Atlantic		1932
Melicertissa platygastra		Northeast Atlantic		1951
Monostaechas faurei		Northeast Atlantic		1958
Monostaechas fisheri		Northeast Atlantic		1905
Monostaechas natalensis		Northeast Atlantic		1958
Monostaechas quadridens		Atlantic, Caribbean and P		1859
Monostaechas sibogae		Atlantic, Caribbean and P		1913
Nuditheca dallii		Eastern Pacific		1877
Oswaldella bifurca		Eastern Pacific		1904
Oswaldella crassa		Eastern Pacific		1998
Oswaldella curiosa		Eastern Pacific		1998
Oswaldella delicata		Eastern Pacific		1997
Oswaldella encarnae		Eastern Pacific		1997
Oswaldella garciacarrascosai		Eastern Pacific		1997
Oswaldella gracilis		Eastern Pacific		1997
Oswaldella incognita		Western Antarctic		1997
Oswaldella obscura		Western Antarctic		1997
Oswaldella rigida		Western Antarctic		1997
Oswaldella terranovae		Western Antarctic		1996
Polyplumaria arenaria		Western Antarctic		1997
Polyplumaria cornuta		Eastern Indian Ocean		1884
Polyplumaria flabellata		Northeast Atlantic.	35 OT	1873
Polyplumaria gracilis		Northeast Atlantic.		1960
Polyplumaria gracillima		Northeast Atlantic.		1873
Polyplumaria kossowskae		Northeast Atlantic.		1911
Polyplumaria sibogae		Northeast Atlantic.		1913
Pseudoplumaria marocana		Northeast Atlantic.		1930
Pseudoplumaria sabinae		Northeast Atlantic.		1992
Scandia michaelsarsi		Northeast Atlantic.		1935
Scandia minor		Northeast Atlantic.		1938
Schizotricha dichotoma		Western Central Atlantic.		1900
Schizotricha falcata		Western Antarctic		1998
Schizotricha glacialis		Western Antarctic		1907
Schizotricha nana		Western Antarctic		1996
Schizotricha profunda		Western Antarctic		1900
Schizotricha turqueti		Antarctic		1906
Schizotricha vervoorti		Western Antarctic		1998
Sibogella erecta		Western Antarctic		1911
Tetracanna octonema		Western Antarctic		1979
Wuvula ochracea		Western Antarctic		1910

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Species Identification: Find Species

Family: Halopterididae (See list of species below)

Family: Halopterididae

(See list of species below)