While conventional filters sieve out large particles, they are prone to clogging and permit smaller particles to pass through. Researchers at Cal State Fullerton have found a new, highly efficient method of filtration in the mouths of giant manta rays. The giant manta ray instead uses “ricochet separation” to filter even the finest food particles from seawater and prevent clogging. Mantas use wing-like structures to bounce away from the leaf-like filter lobes towards the esophagus while the water flows out through the gills. This method could be applied to industrial scale fluid filtration or even improve remote water filtration systems.
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