Children (131 direct children, 134 direct and indirect children):
Hydroides bannerorum
Hydroides inermis
Hydroides minax
Hydroides gairacensis
Hydroides bisectus
Hydroides rectus
Hydroides protulicola
Hydroides rostratus
Hydroides glandifer
Hydroides malleolaspinus
Hydroides multispinosus
Hydroides chilensis
Hydroides rhombobulus
Hydroides similis
Hydroides bispinosa
Hydroides tuberculatus
Hydroides heterofurcatus
Hydroides recurvispina
Hydroides xishaensis
Hydroides monroi
Hydroides plateni
Hydroides humilis
Hydroides fusicola
Hydroides panamensis
Hydroides sinensis
Hydroides ralumianus
Hydroides trivesiculosus
Hydroides norvegicus
Hydroides norvegica
Hydroides heterocerus
Hydroides furcifer
Hydroides similoides
Hydroides capensis
Hydroides uniformis
Hydroides tenhovei
Hydroides homoceros
Hydroides longistylaris
Hydroides huanghaiensis
Hydroides bifurcatus
Hydroides nodosus
Hydroides diramphus
Hydroides adamaformis
Hydroides ochoterena
Hydroides pseudexaltatus
Hydroides simplidentatus
Hydroides mucronatus
Hydroides gracilis
Hydroides deleoni
Hydroides lambecki
Hydroides sanctaecrucis
Hydroides trompi
Hydroides bandaensis
Hydroides fuscus
Hydroides centrospina
Hydroides salazarvallejoi
Hydroides albiceps
Hydroides exaltatus
Hydroides dafnii
Hydroides trilobulus
Hydroides operculatus
Hydroides stoichadon
Hydroides elegans
Hydroides steinitzi
Hydroides parvus
Hydroides helmatus
Hydroides brachyacanthus
Hydroides tambalagamensis
Hydroides alatalateralis
Hydroides niger
Hydroides arnoldi
Hydroides spiratubus
Hydroides ezoensis
Hydroides azoricus
Hydroides nanhaiensis
Hydroides bulbosus
Hydroides longispinosus
Hydroides spongicola
Hydroides kimberleyensis
Hydroides microtis
Hydroides elegantulus
Hydroides dianthus
Hydroides spiculitubus
Hydroides novaepommeraniae
Hydroides externispina
Hydroides ancorispinus
Hydroides cruciger
Hydroides bispinosus
Hydroides perezi
Hydroides dipoma
Hydroides floridanus
Hydroides augeneri
Hydroides calopoma
Hydroides mongeslopezi
Hydroides pseudouncinatus
Hydroides priscus
Hydroides uncinata
Hydroides groenlandica
Hydroides uncinatus
Hydroides gottfriedi
Encrusted tube worm
Hydroides brachyacantha
Hydroides pseudouncinata
(tree size 2)
Hydroides azorica
Hydroides nigra
Hydroides ochotereana
Hydroides multispinosa
Hydroides inornata
Hydroides dolabrus
Hydroides heterocera
Hydroides amri
Hydroides qiui
Hydroides glasbyi
Hydroides vizagensis
Hydroides nikae
Hydroides tuberculata
Hydroides bifurcata
Hydroides elegantula
Hydroides exaltata
(tree size 1)
Hydroides parva
Hydroides lirs
Hydroides bisecta
Hydroides basispinosa
Hydroides bulbosa
Hydroides rhombobula
Hydroides trilobula
Hydroides trivesiculosa
Hydroides simplidentata
Hydroides pseudexaltata
Hydroides dirampha
Hydroides affinis
Hydroides pectinata
Hydroides tambalgamensis