< Topic >The potential sand bivalve and potential sand snail such as short-necked clam and clam are protected from the adding diet of the stingray, joint cultivation equipment of the potential sand bivalve and the potential sand snail and the male is offered.SolutionsDischarging the spat to seabed sands 3, the potential sand bivalve and potential sand snail such as short-necked clam and clam it cultivates 4, but in order the male not to be let flow mesh basket 1 of 2 cultivation to the ocean current in the directly above, post cylinder providing 5 and the anchor in the seabed, it locks. In the underwater on 0.3m - 1m of seabed sands the male cultivation basket is installed, penetration of the stingray is prevented with the fence 7 which under the external edge of that male cultivation basket is installed in 0.3m - 1m interval.< Choice figure >Drawing 1【課題】アサリやハマグリ等の潜砂2枚貝及び潜砂巻貝をアカエイの補食から守る、潜砂2枚貝及び潜砂巻貝と牡蠣の共同養殖設備を提供する。【解決手段】海底砂地3に稚貝を放流してアサリやハマグリ等の潜砂2枚貝及び潜砂巻貝4の養殖を行うが、その真上に牡蠣2養殖の網籠1を海流に流されないように海底に杭柱5及びアンカーを設けて固定する。海底砂地の0.3m~1m上の海中に牡蠣養殖籠を設置し、その牡蠣養殖籠の外形縁下に0.3m~1m間隔に取り付けた柵7でアカエイの進入を防ぐ。【選択図】図1
