The Guardian: Wamberal Beach Erosion
"A cost-benefit analysis of options for a seawall at Wamberal beach commissioned by the New South Wales government in 2017 found that none of the six engineering options considered would deliver a net public benefit and that erosion would only increase with rising sea levels."
"But as the Marden Jacobs report detailed, the trade-off from protecting about 60 beachfront properties with a seawall would be the potential loss of visits due to the loss of the beach."