Protect our coastlines from erosion

We often read how homes and land is being lost to the sea by coastal erosion, but little to nothing is being done. Their is a solution which is called doloso, which when laid down will interlock with each other and break the wave actions and therebt protect the cliff faces. These can be made insitu and laid down with cranes. They protect harbours across the world. Instead of throwing our foreign aid away endlessly, use it to protect our coastlines. ITS NOT ROCKET SCIENCE EITHER.