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The structure of these tiny sea snails’ choppers is so strong, engineers could copy it to make cars, planes, and other objects prone to collision, says Asa Barber, an engineering professor at the University of Portsmouth who announced the discovery in a just published study. They could also be used to make false teeth for humans.
The radula is used in two main ways: either as a rake, generally to comb up microscopic, filamentous algae from a surface; or as a rasp, to feed directly on a plant.
wikipedia / Radula
Tracks made by terrestrial gastropods with their radulas, scraping green algae from a surface inside a greenhouse