An object of the present invention is to provide to complete the installation of an artificial reef easy fixture at the right time. A fixture 1 for submarine installation of artificial reefs is provided with a base 10 having a bottom of the sea surface is the surface of the installation surface and the bottom of the sea side of the artificial reef, towards the opposite side of the sea floor on a threaded portion 20 which protrudes from the installation surface, and a through hole 30 which penetrates along the base in a straight line from the seabed surface to the mounting surface is formed on the pedestal.FIELD 1【課題】適切なタイミングで人工礁の設置を完了しやすい固定具を提供する。【解決手段】人工礁の海底設置用の固定具1は、人工礁の設置面と海底側の表面である海底面とを有する台座10を備え、海底面とは反対側に向かって設置面から突出したネジ部20と、海底面から設置面まで台座を直線に沿って貫通した貫通孔30とが、台座に形成されている。【選択図】図1
