directions_boatThis is an invasive or introduced species.
Photograph by David Muirhead
SA Distribution
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Size: Colonies to around 40 cm
Distribution: Gulf waters and NE Kangaroo Island
Habitat: Jetty pylons, rocks and rubble
Depth: Subtidal to 10 metres
This introduced bryozoan is one of the few that can handle areas of low salinity, making it an ideal candidate for introduction via shipping. It initially settles into a grey encrusting mat, before developing orange to brick-red branches that form tubes of varying widths. In SA, it is most similar to Steginoporella chartacea, but that species has a more regular shape, and various Watersipora, which is usually more red in colour and if it has lobes, they have a lower profile.