Sertularia balei  

The taxonomic history of this species has been long confused. For further details, see:

Watson, J.E. 2005. Hydroids of the Archipelago of the Recherche and Esperance, Western Australia: Annotated list, redescription of species and description of new species. pp. 495-612 in Wells, F.E., Walker, D.I., Kendrick, G.A. (ed). The Marine Flora and Fauna of Esperance, Western Australia. Perth : Western Australian Museum