Filter feeding animals capture and lose oil droplets using cilia or ramified appendages. Here we demonstrate that copepod and barnacle appendages capture fish, canola and 1-decanol oil droplets up to $11\mathrm{\mu }\mathrm{m}$ without selectivity for size, chemistry, density, viscosity, or interfacial tension. Following capture, the droplets are ingested or lost via detachment. Capture and detachment did not differ between a barnacle appendage and stainless-steel wires of radii $R_f=50$ and $250\mathrm{\mu }\mathrm{m}$. Key parameters to detachment include the ratio of oil droplet radius to fiber radius, and the Weber number. Smaller oil droplet size to fiber size ratio $r=R_o∕R_f$, required a higher $We$ for detachment. These data plot as a curve that predicts whether a droplet will remain captured or detach and re-enter the fluid stream, based on the fluid, the droplet radius to fiber radius ratio, and the oil droplet properties. Significantly, this curve may be used to plan responses to oil spills in marine environments.

滤食动物使用纤毛或分支的附属物捕获并损失油滴。在这里，我们证明co足类和藤壶附属物可以捕获鱼，低芥酸菜子油和1-癸醇油滴，直至$11\mathrm{\mu }\mathrm{米}$对尺寸，化学性质，密度，粘度或界面张力没有选择性。捕获后，液滴通过分离而被摄入或损失。藤壶附件和半径不锈的钢丝之间的捕获和分离没有差异${\mathrm{[R}}_F=50$ 和 $250\mathrm{\mu }\mathrm{米}$。分离的关键参数包括油滴半径与纤维半径的比值以及韦伯数。较小的油滴尺寸与纤维尺寸比$\mathrm{[R}={\mathrm{[R}}_{Ø}∕{\mathrm{[R}}_F$，要求更高 $\mathrm{w\; ^}Ë$支队。这些数据绘制为曲线，根据流体，液滴半径与纤维半径之比以及油滴特性，预测液滴是否会被捕获或分离并重新进入流体流。值得注意的是，该曲线可用于计划对海洋环境中漏油的响应。