Dr Ian Abbott, says it all in his letter to the Post 30 October. 

Let's save the John Black Dune Park from further destruction. The tennis courts have already eaten into this area. The Council promised to beautify the dunes, but of course this never happened. We cannot lose the remaining dunes, and destroy the habitat of rare wrens, and more than 21 bird species which frequent the area, not to mention shingle-backed lizards like Bob!  Please ask friends to save the dunes, and not sacrifice them for an environmentally unfriendly concrete bowl. We need to act quickly before the bulldozers arrive. Please forward this link to friends and contact the Cottesloe Council. 

Friends of John Black Dune Park