Colony of individual polyps (hydranths) joined by root-like network of tubular stolons at the base. Colony shape is feather-like (pinnate). Colour: golden-brown. Up to 4 cm long.
Colonies of these hydroids appear in winter. They become fertile in spring and summer.
On sponges and other invertebrates in sheltered oceanic waters.
New Zealand, Antarctica and south-eastern Australia.
Plankton or Particles
Generally not harmful but still able to sting bare skin.
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed