Firm and gelatinous to the touch. It forms large colonies that attach to hard surfaces and look like clusters of white or cream coloured cylindrical tubes. Colonies are generally 5-30 cm long, but can sometimes reach 1.5 m long.
To help protect our environment:
Can inhabit a wide range of habitats and but is generally found in soft-bottomed tidal habitats and on hard surfaces such as wharf piles, aquaculture equipment and mangrove roots. It is most commonly spread as fouling on marine farming equipment and occasionally on boat hulls.
It grows rapidly and will often reach high abundances in summer months; altering tidal habitats and competing with native species for space and food.
Before moving your boat or other craft to new locations, make sure the hull, anchor chain and all other equipment on board is clean and free of marine pests or other fouling. Think about where you’re taking on or releasing ballast, bilge or holding tank water, or water in any other container such as chilly bins, to avoid spreading marine pests.