PROBLEM TO BE SOLVED: To provide a member for preventing adhesion of aquatic organisms that can prevent adhesion of microorganism membrane and large-sized organisms.SOLUTION: The member for preventing adhesion of aquatic organisms includes a polymer and fine particles of a metal iodide dispersed and fixed in the polymer, at least on its surface.COPYRIGHT: (C)2011,JPO&INPIT【課題】微生物皮膜や大型生物の付着が防止できる水生生物付着防止用部材を提供する。【解決手段】ポリマーと、ポリマー内に分散して固定された金属ヨウ化物の微粒子とを、少なくとも表面に備える水生生物付着防止用部材。【選択図】 図1