| Scientific Name | Author | English Name |
|---|---|---|
| Ectopleura americana | Peterson, 1990 | |
| Ectopleura apicisacciformis | Xu, Huang & Guo, 2007 | |
| Ectopleura bethae | (Warren, 1908) | |
| Ectopleura crocea | (Agassiz, 1862) | Pink-mouth hydroid |
| Ectopleura dumortierii | (Van Beneden, 1844) | Flower hydroid |
| Ectopleura exxonia | (Watson, 1978) | |
| Ectopleura gemmifera | Xu, Huang & Guo, 2007 | |
| Ectopleura grandis | Fraser, 1944 | |
| Ectopleura guangdongensis | Xu, Huang & Chen Xu, 1991 | |
| Ectopleura indica | Petersen, 1990 | |
| Ectopleura japonica | (Hirohito, 1988) | |
| Ectopleura larynx | (Ellis & Solander, 1786) | Ringed tubularia |
| Ectopleura latitaeniata | Xu & Zhang, 1978 | |
| Ectopleura marina | (Torrey, 1902) | Solitary pink-mouth hydroid |
| Ectopleura mayeri | Petersen, 1990 | |
| Ectopleura media | Fraser, 1948 | |
| Ectopleura minerva | Mayer, 1900 | |
| Ectopleura multicirrata | Schuchert, 1996 | |
| Ectopleura obypa | Migotto & Marques, 1999 | |
| Ectopleura pacifica | Thornely, 1900 | |
| Ectopleura radiata | (Uchida, 1937) | |
| Ectopleura sacculifera | Kramp, 1957 | |
| Ectopleura venusta | (Yamada, 1950) | |
| Ectopleura viridis | (Pictet, 1893) | |
| Ectopleura wrighti | Petersen, 1979 | |
| Ectopleura xiamenensis | Zhang & Lin, 1984 | |
| Ectopleura xuxuanii | Xu, Huang & Guo, 2007 | |
| Eucodonium arctica | Hand & Kan, 1961 | |
| Eucodonium brownei | Hartlaub, 1907 | |
| Euphysilla peterseni | Allwein, 1967 | |
| Euphysilla pyramidata | Kramp, 1955 | |
| Euphysora abaxialis | Kramp, 1962 | |
| Euphysora annulata | Kramp, 1928 | |
| Euphysora bigelowi | Maas, 1905 | |
| Euphysora furcata | Kramp, 1948 | |
| Euphysora gemmifera | Bouillon, 1978 | |
| Euphysora gigantea | Kramp, 1957 | |
| Euphysora normani | (Browne, 1916) | |
| Euphysora pseudoabaxialis | Bouillon, 1978 | |
| Euphysora russelli | Hamon, 1974 | |
| Euphysora valdiviae | Vanhöffen, 1911 | |
| Euphysora verrucosa | Bouillon, 1978 | |
| Gotoea similis | Kramp, 1959 | |
| Gotoea typica | Uchida, 1927 | |
| Hybocodon atentaculatus | Uchida, 1947 | |
| Hybocodon chilensis | Hartlaub, 1905 | Fireworks hydroid |
| Hybocodon cryptus | Watson, 1984 | |
| Hybocodon forbesi | Mayer, 1894 | |
| Hybocodon octopleurus | Kao, Li, Chang & Li, 1958 | |
| Hybocodon pendulus | (Agassiz, 1862) | One armed jellyfish |
| Hybocodon prolifer | Agassiz, 1862 | |
| Hybocodon unicus | (Browne, 1902) | |
| Pinauay ralphi | (Bale, 1884) | |
| Plotocnide borealis | Wagner, 1885 | |
| Plotocnide incertae | (Linko, 1900) | |
| Ralpharia coccinea | Watson, 1984 | |
| Ralpharia gorgoniae | Petersen, 1990 | Solitary gorgonian hydroid |
| Ralpharia magnifica | Watson, 1980 | |
| Ralpharia neira | Petersen, 1990 | |
| Ralpharia sanctisebastiani | (Silveria & Migotto, 1984) | |
| Rhabdoon singulare | Keferstein & Ehlers, 1861 | |
| Tubularia acadiae | Petersen, 1990 | |
| Tubularia amoyensis | (Hargitt, 1927) | |
| Tubularia attenuoides | Coughtrey, 1875 | |
| Tubularia aurea | Fraser, 1936 | |
| Tubularia bellis | Allman, 1865 | |
| Tubularia formosa | Hartlaub, 1905 | |
| Tubularia harrimani | Nutting, 1901 | |
| Tubularia hodgsoni | Hickson & Gravely, 1907 | |
| Tubularia indivisa | Linnaeus, 1758 | Tall tubularia |
| Tubularia multitentaculata | Fraser, 1938 | |
| Tubularia prolifer | unspecified | |
| Tubularia regalis | Boeck, 1860 | |
| Tubularia simplex | unspecified | |
| Zyzzyzus floridanus | Petersen, 1990 | |
| Zyzzyzus parvula | (Hickson & Gravely, 1907) | |
| Zyzzyzus robustus | Petersen, 1990 | |
| Zyzzyzus warreni | Calder, 1988 |