Hydroid
A colonial hydroid that is one of the first fouling organisms to colonise new surfaces. Hydroid growth reduces water flow…
Organism Type: Hydroids
Plumose Anemone
A soft-bodied anemone that colonises cage frames, pontoons, and mooring chains in cold northern waters. While not a heavy fouler,…
Obelia Hydroid
A delicate colonial hydroid forming feathery white growths on submerged nets and ropes. Obelia is among the earliest macrofoulers to…