In Hamada fishing port of Shimane Prefecture, the new technical strategy like application of grooved armor block (for propagation of abalone and top shell) and so on have been taken into consideration in planning of the improvement works with the purpose of amplifying the function as seaweed bed on the submerged mound portion and also base mound portion of revetment · breakwater. This paper presentsthe results of monitoring survey conducted over two years from the completion ofthe partial section of the works.
