| 摘要 |
PROBLEM TO BE SOLVED: To provide a fishing bank capable of maintaining the swarming effect of fishes almost permanently even if barnacles, mussels, oyster shells, etc., adhere on the surface of porous concrete and occlude the same, and also capable of being used in a gulf region.SOLUTION: The gulf fishing bank is capable of storing an involved material 3 in a basket having a frame plate formed with a plurality of openings through which fishes and shellfishes pass, wherein the involved material 3 has a plurality of thorough holes having different sizes and is also fixed as freely detachable. The involved material 3 desirably has three kinds of thorough holes having different sizes. |
