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 pale brown, hydrocladia white, gonotheca white. Up to 10 cm high.

Biology

These hydroids were distributed around the world possibly on ships. Their colonies become fertile over summer.

Distribution

Near-Worldwide in subtropical and temperate seas.

Habitat

Subtidal in sheltered bays. Epizoic on polychaete tubes and other invertebrate substrates.

More Information