This document discusses different techniques for coastal management, including both "hard" and "soft" engineering approaches. Hard engineering techniques use artificial structures like sea walls to control erosion, but they can interfere with coastal processes and problems can be transferred elsewhere. Soft engineering tries to fit with the natural environment and have lower maintenance costs, making them preferred currently. Specific techniques mentioned include sea walls, groynes, rip rap, and beach nourishment. Managed retreat is discussed as allowing land to return to the sea to create natural habitats, though it has costs and changes the coastal landscape. The objectives are to understand advantages and disadvantages of different coastal management techniques and how they affect the coastal environment.