General Description

Colony of individual polyps (hydranths) joined by root-like network of tubular stolons at the base. Colony shape is feather-like (pinnate). Colour: stems and corbula (basket-like structure containing reproductive structures) variable greyish to yellowish brown, gonophores (reproductive structures) cream to pink.

Biology

This is one of the most spectacular and graceful hydroids in southern Australia. Their colonies grow and become fertile spring to late summer.

Distribution

Southern Australia.

Habitat

On sponges and other invertebrates, in sheltered bays, below low water mark on jetty piles.

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