to substrates through scallop dredging and trawling may have assisted the
spread of non-indigenous taxa such as the New Zealand Screw Shell (Maoricolpus),
Northern Pacific Seastar (Asterias amurensis), and the Mediterranean
sabellid polychaete (Sabella spallanzanii). Sabella spallanzanii only
appears to colonise disturbed habitats, and the scallop industry has been
implicated in its spread in Port Phillip Bay (Currie and Parry 1996).