PROBLEM TO BE SOLVED: To provide an algae inhibiting article that can exhibit algae inhibitory effect inexpensively and stably.SOLUTION: An algae inhibiting article 1 is a complex to prevent the generation of algae underwater. The algae inhibiting article 1 has a body part 2 put into water W, and a fine particle material 3 disposed on at least part of a surface 2a of the body part 2 and mainly composed of carbon.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】安価かつ安定した藻の抑制効果を発揮できる藻抑制体を提供する。【解決手段】藻抑制体1は、水中での藻の発生を抑制するための複合体である。藻抑制体1は、水中Wに投入される本体部2と、本体部2の表面2aの少なくとも一部に配された炭素を主成分とする微粒子材料3とを含む。【選択図】 図1