According to the American Psychological Association, chronic stress is linked to the six leading causes of death: heart disease, cancer, lung ailments, accidents, cirrhosis of the liver and suicide. And more than 75 percent of all physician office visits are for stress-related ailments and complaints.
In most cases, seawall design includes a curved embankment facing the water, so the energy from the waves of the ocean are directed back out to sea. Building a seawall is an expensive undertaking, with cost estimates ranging from around four-thousand to seven-thousand dollars per meter.
For a wall 100m long it costs over $400 000AUS. The thing with some rock and sea walls is that they can also be built on the beach to raise residential and commercial housing as the early quote stated to protect them.