Colony of individual polyps (hydranths) joined by root-like network of tubular stolons at the base. Colony shape is feather-like (pinnate). Colour: pale greyish. Up to 5 cm high.
This is one of the most spectacular and graceful hydroids in southern Australia. They are rarely seen because they often attach to the underside of ledges. Their colonies grow late summer to winter, and become fertile in winter.
Deep water reef, often under ledges.
Plankton or Particles
Generally not harmful but still able to sting bare skin.
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed