Hydroides alatalateralis- Hydroides albiceps
- Hydroides ancorispina
- Hydroides arnoldi
- Hydroides augeneri
- Hydroides azorica
- Hydroides bannerorum
- Hydroides bifurcata
- Hydroides bispinosa
- Hydroides brachyacantha
- Hydroides bulbosa ten
- Hydroides bulbosus
- Hydroides capensis
- Hydroides caribensis
- Hydroides crucigera
- Hydroides deleoni
- Hydroides dianthus
- Hydroides dipoma
- Hydroides dirampha
- Hydroides elegans
- Hydroides elegantula
- Hydroides exaltata
- Hydroides ezoensis
- Hydroides floridana
- Hydroides gairacensis
- Hydroides gottfriedi
- Hydroides gracilis
- Hydroides helmata
- Hydroides heterocera
- Hydroides heterofurcata
- Hydroides homoceros
- Hydroides humilis
- Hydroides inermis
- Hydroides inornata
- Hydroides longispinosa
- Hydroides microtis
- Hydroides minax
- Hydroides mongeslopezi
- Hydroides mucronata
- Hydroides nigra
- Hydroides nodosa
- Hydroides norvegica
- Hydroides novaepommeraniae
- Hydroides ochotereana
- Hydroides operculata
- Hydroides panamensis
- Hydroides parva
- Hydroides perezi
- Hydroides plateni
- Hydroides prisca
- Hydroides protulicola
- Hydroides pseudouncinata
- Hydroides recta
- Hydroides recurvispina
- Hydroides salazarvallejoi
- Hydroides sanctaecrucis
- Hydroides sceptrifera
- Hydroides similis
- Hydroides spongicola
- Hydroides steinitzi
- Hydroides stoichadon
- Hydroides tambalagamensis
- Hydroides trivesiculosa
- Hydroides trompi
- Hydroides tuberculata
- Hydroides uncinata