PROBLEM TO BE SOLVED: To provide a coating material capable of preventing the adhesion of marine organisms such as acorn shells.SOLUTION: The coating material can effectively prevent the adhesion of marine organisms such as acorn shells 8, Mytilus edulises, byozoans, and algae, by: adding and mixing 100 to 150 ml of a chlorine dioxide aqueous solution in a concentration of 500 to 1,000 ppm with 10 L of a subsea coating material and coating the coating material 4 for preventing the adhesion of marine organisms on the surfaces of ship bottoms of ships and boats, ocean constructions, subsea facilities and the like.COPYRIGHT: (C)2013,JPO&INPIT【課題】フジツボ類その他の海洋生物の付着を防止することができるような塗料の提供。【解決手段】船底塗料中に、濃度500~1000ppmの二酸化塩素水溶液を、船底塗料10リットルに対して100~150ml添加して混合し、この海洋生物付着防止用塗料4を船舶やボートの船底部、海洋構築物、海中設備などの表面に塗布することによって、フジツボ類8、ムラサキイガイ類、コケムシ類、藻類その他の海洋生物の付着を効果的に防止することができる海洋生物の付着を防止することができる塗料。【選択図】図2