A map of the 120km2 study area in the near-shore environment around Bunbury, Western Australia.

<p>The extent of the three zones of transect lines (dashed zigzag line). Both Zone 1 (Buffalo Beach) and Zone 2 (Peppermint Beach) were coastal waterways, while Zone 3 (Bunbury Inner) consisted of inner waters including the Leschenault Inlet and Estuary, Inner and Outer Harbour, Koombana Bay and the lower reaches of the Collie River.