At present, biomimetic antifouling research objects are mostly concentrated on the fast-moving marine organism, but the anti-fouling effect of the low-speed or static marine equipment is not obvious. This paper describes the anti-fouling mechanism of soft coral (Sarcophyton trocheliophorum), including the physical defense mechanism and the bactericidal ability of mucus and coral powder. As a sessile organisms, soft coral lacks escape mechanism. Therefore, the study on its antibacterial strategy is significant because it can provide theoretical guidance for static antifouling. Results showed that the live soft coral would molt in unfriendly environment, and the secreted mucus could defend themselves against fouling microorganism. Then, Liquid Chromatography-Mass Spectrometry (LC-MS) analysis was conducted to identify the bioactive compounds of the coral powder and mucus. Results revealed that both powder and mucus contained a wide variety of toxic components, which had bactericidal effects. Moreover, at the same concentration, the inhibitory effect of the main components on Gram-negative bacteria was stronger than that on positive bacteria. These findings enhance the understanding about the antifouling mechanism of soft coral and provide new ideas for design and prepare novel antifouling strategy to combat biofouling under static condition.

中文翻译：

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活的和死的软珊瑚的新防污策略（Sarcophyton trocheliophorum）：结合的物理和化学机制

目前，仿生防污研究对象主要集中在快速移动的海洋生物上，但低速或静态海洋设备的防污效果并不明显。本文介绍了软珊瑚（Sarcophyton trocheliophorum）的防污机理），包括粘液和珊瑚粉的物理防御机制和杀菌能力。作为一种无柄生物，软珊瑚缺乏逃逸机制。因此，对其抗菌策略的研究具有重要意义，因为它可以为静态防污提供理论指导。结果表明，活的软珊瑚会在不友好的环境中蜕变，分泌的粘液可以保护自己免受结垢微生物的侵害。然后，进行了液相色谱-质谱分析（LC-MS）以鉴定珊瑚粉和粘液的生物活性化合物。结果表明，粉末和粘液均含有多种有毒成分，具有杀菌作用。而且，在相同的浓度下 主要成分对革兰氏阴性菌的抑制作用强于阳性菌。这些发现加深了对软珊瑚防污机理的理解，为设计和制定新颖的防污策略以对抗静态条件下的生物污损提供了新思路。