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Hydrozoa
World Hydrozoa Database
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Hydrozoa (hydroids)
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Obelia bidentata
Dendrogramma discoides
Dendrogramma enigmatica sp. n., A, holotype
Dendrogramma discoides
Dendrogramma enigmatica sp. nov., holotype
Sarsia lovenii, collected near Bergen, Norway.
Dendrogramma
Aequorea vitrina
Podocoryne exigua
Hydractinia echinata colony female 1c
Clinging jellyfish (Gonionemus vertens)
Clinging jellyfish (Gonionemus vertens)
Distichopora sp.
Polyp colony of Turritopsis dohrnii, Italy, Mediterranean
Turritopsis rubra, nematocyst clusters of mouth rim.
Oceania armata, stalked nematocyst clusters of the mouth margin
Zyzzyzus rubusidaeus, Vancouver Island, BC, Canada
Zyzzyzus rubusidaeus, Vancouver Island, BC, Canada
Thuiaria thuja (Linnaeus, 1758); Ireland
Thuiaria articulata (Pallas, 1766)
Thuiaria articualta (Pakkas, 1766)
Tamarisca tamarisca (Linnaeus, 1758)
Sertularia argentea Linnaeus, 1758
Sertularella tenella (Alder, 1856)
Rhizocaulus verticillatus (Linnaeus, 1758)
Polyplumaria flabellata G. O. Sars, 1874
Obelia geniculata (Linnaeus, 1758)
Obelia dichotoma (Linnaeus, 1758)
Lytocarpia myriophyllum (Linnaeus, 1758)
Lafoea dumosa (Fleming, 1820)
Kirchenpaueria similis
Kirchenpaueria pinnata (Linnaeus, 1758)
Hydrallmania falcata (Linnaeus, 1758)
Plumularia setacea (Linnaeus, 1758)
Plumularia setacea (Linnaeus, 1758)
Halopteris catharina (Johnston, 1833)
Halecium plumosum Hincks, 1868
Halecium muricatum (Ellis & Solander, 1786)
Halecium beanii (Johnston, 1838)
Gymnangium montagui (Billard, 1912)
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