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Checklist: Hydroids (Hydrozoa)
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Identification Key (new version): Hydroids (Hydrozoa)
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Abylidae
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Aglaopheniidae
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Proboscidactylidae
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Hydroids (Hydrozoa)
Species Count: 117
Abylidae
Enneagonum hyalinum
Aglaopheniidae
Aglaophenia dubia
Aglaophenia latecarinata
Cladocarpus distomus
Macrorhynchia grandis
Macrorhynchia philippina
Bougainvilliidae
Bimeria vestita
Bougainvillia muscus
Garveia franciscana
Garveia gracilis
Parawrightia robusta
Silhouetta uvacarpa
Campanulariidae
Clytia gracilis
Clytia hemisphaerica
Clytia hummelincki
Clytia linearis
Clytia noliformis
Clytia paulensis
Clytia stolonifera
Gastroblasta raffaelei
Obelia bidentata
Obelia dichotoma
Cirrholoveniidae
Cirrholovenia tetranema
Cladocorynidae
Pteroclava krempfi
Cladonematidae
Cladonema pacificum
Cordylophoridae
Cordylophora caspia
Corydendrium parasiticum
Corynidae
Stauridiosarsia nipponica
Diphyidae
Chelophyes contorta
Diphyes dispar
Muggiaea atlantica
Eudendriidae
Eudendrium bermudense
Eudendrium capillare
Eudendrium carneum
Myrionema amboinense
Geryoniidae
Liriope tetraphylla
Haleciidae
Halecium bermudense
Halecium dyssymetrum
Halecium lightbourni
Halecium nanum
Halecium regulare
Halecium tenellum
Nemalecium lighti
Halicreatidae
Halicreas minimum
Halopterididae
Antennella curvitheca
Antennella secundaria
Halopteris alternata
Halopteris carinata
Hydractiniidae
Hydractinia bayeri
Janaria mirabilis
Hydridae
Hydra vulgaris
Kirchenpaueriidae
Kirchenpaueria halecioides
Kirchenpaueria pinnata
Lafoeidae
Lafoea dumosa
Milleporidae
Millepora alcicornis
Millepora boschmai
Millepora complanata
Millepora intricata
Millepora platyphylla
Millepora squarrosa
Millepora striata
Oceaniidae
Rhizogeton sterreri
Turritopsis dohrnii
Turritopsis nutricula
Olindiidae
Craspedacusta sowerbii
Cubaia aphrodite
Pandeidae
Amphinema dinema
Larsonia pterophylla
Pennariidae
Pennaria disticha
Physaliidae
Physalia physalis
Plumulariidae
Dentitheca dendritica
Plumularia biarmata
Plumularia floridana
Plumularia margaretta
Plumularia setacea
Plumularia strictocarpa
Porpitidae
Porpita porpita
Velella velella
Proboscidactylidae
Proboscidactyla ornata
Ptilocodiidae
Thecocodium
Rathkeidae
Podocorynoides minima
Rhopalonematidae
Persa incolorata
Sertulariidae
Dynamena anceps
Dynamena crisioides
Dynamena disticha
Dynamena quadridentata
Sertularia distans
Sertularia loculosa
Sertularia marginata
Sertularia rugosissima
Sertularia simplex
Sertularia vervoorti
Thuiaria cylindrica
Solanderiidae
Solanderia gracilis
Sphaerocorynidae
Sphaerocoryne agassizii
Sphaerocoryne bedoti
Sphaerocoryne coccometra
Stylasteridae
Crypthelia pudica
Distichopora robusta
Stylaster roseus
Syntheciidae
Diphasia tropica
Hincksella formosa
Sertularella ampullacea
Sertularella cylindritheca
Sertularella diaphana
Sertularella exilis
Sertularella hartlaubi
Synthecium tubithecum
Tridentata loculosa
Thyroscyphidae
Symmetroscyphus intermedius
Thyroscyphus marginatus
Thyroscyphus ramosus
Tubulariidae
Ectopleura dumortieri
Ectopleura mayeri
Ralpharia gorgoniae
Zyzzyzus warreni
Zancleidae
Zanclea alba