Solar-driven interfacial evaporation has enormous promise for fresh water recovery and salt harvesting, but salt accumulation-related challenges stand in its way. Herein, we report a spined groove-ridge pairs inspired by the shell ornamentation of the Vasticardium vertebratum, which addresses salt accumulation by artfully integrating salt reflux into localized salt crystallization. The seashell-mimetic radial V-groove array enables the 3D evaporator to transport water rapidly and directionally, resulting in high-performance water evaporation (∼95% efficiency) and localized crystallization. The periodic spines enlightened by the spine-bearing ridge on the seashell provide considerable micro-unit salt reflux. The 2-in-1 integration design endows the three-dimensional evaporator with superior solar-driven zero liquid discharge and excellent long-term salt resistance even when dealing with high-salinity brine (20 wt% NaCl) and a series of heavy metallic salt solutions. Our design offers a new alternative solution to avoiding salt scaling and could advance locally crystallized solar evaporators towards practical applications.

太阳能驱动的界面蒸发在淡水回收和盐分收集方面具有巨大前景，但与盐分积累相关的挑战阻碍了它的发展。在这里，我们报告了一种受Vasticardium v​​ertebratum壳纹装饰启发的带脊槽脊对，它通过巧妙地将盐回流整合到局部盐结晶中来解决盐分积累问题。仿贝壳径向 V 形槽阵列使 3D 蒸发器能够快速定向输送水，从而实现高性能水蒸发（~95% 效率）和局部结晶。由贝壳上的脊柱支撑的周期性脊柱提供了相当大的微单位盐回流。二合一一体化设计赋予三维蒸发器优越的太阳能驱动零液体排放，即使在处理高盐度卤水（20 wt% NaCl）和一系列重金属盐时也具有出色的长期耐盐性解决方案。