most of which is sandy beaches. Mandurah also has a number of suburbs built around artificially created canal systems that extend from the Peel Inlet, such as Halls Head, Dudley Park and Wannanup. In terms of geology, much of Mandurah lies on the dune systems which dominate South Western WA's coastline, progressively grading towards the Swan Coastal Plain as one travels inland. The area has infertile soils due to the dunes being rather sandy, having poor water retention qualities. Limestone outcrops are found to the north of the city especially along the Mandurah railway line. Mandurah is the closest city to Yalgorup National Park which is home to modern thrombolites as well as an array of flora and fauna. Mandurah is located in the Swan Coastal Plain ecoregion. The ecoregion contains an array of vegetation, from coastal dune and sandplains to banksia and eucalypt woodlands. Mandurah is covered by shoreline and dune deposits from the Pleistocene and Holocene that overlie Paleozoic and Neogene deposits of the Perth Basin. Coastal dunes feature scrub-heath communities, though banksia low woodlands occur on the soils of coastal dunes. Progressing inland give way to eucalypt woodlands. Seasonal wetlands (dry in the summer and wet in winter) are the most diverse habitat in the Swan Coastal Plain, which Mandurah has several wetland regions around the Peel Inlet. The wetlands feature several osprey nests, spoonbill and darters. Other fauna includes galah, short-billed black cockatoo, long-billed black cockatoo, and Australian ringneck among others. Australian ringnecks face competition for nesting space from rainbow lorikeet, an introduced species in Western Australia, that has now spread to Mandurah. Despite attempts to eradicate rainbow lorikeets, the population has grown to the point that they can no longer be eradicated. Political Mandurah is typically considered a marginal area for the major parties in Australian politics. Northern Mandurah lies in the safe Labor Federal seat of Brand, held by Gary Gray, while southern and central Mandurah lies in the more marginal Canning, held by the Liberal Party's Andrew Hastie. At state level, northern and central Mandurah is located in the safe Labor seat of Mandurah held by David Templeman, while southern Mandurah is located in Dawesville, a traditionally safe Liberal seat that was swept up in Labor's landslide of 2021, and is now held by Labor's Lisa Munday. A sliver of eastern Mandurah is located in Murray-Wellington, held by Labor's Robyn Clarke. Despite technically