Bold Park, currently 437 ha, is the largest remaining bushland remnant in the urban area of the Swan Coastal Plain. Kings Park is only slightly smaller, covering 400 ha. The educational value of Bold Park is highly rated because of the diverse flora and fauna, and its coastal location in the metropolitan area.
The tuart-banksia woodlands and limestone heaths support a number of habitats for wildlife, including hundreds of species of insects. Together, fungi, insects and plants provide the basis of a complex food chain involving all the amphibians, reptiles, birds and mammals in the bushland. Over 1,000 native and non-native species of flora, fauna and fungi have been identified in Bold Park.
Bold Park provides important linkages to other bushland areas in Perth, including the coast and remnant vegetation within Commonwealth land (Campbell Barracks) to the south-west; Perry Lakes, Wembley Golf Course and Herdsman Lake to the north; Shenton Park Bushland and Kings Park to the east; and Cottesloe Golf Course and Lake Claremont to the south. These linkages provide corridors for fauna to move between these areas, particularly when seeking refuge from disturbance events.