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The strongest natural material known to man

Updated 1520 GMT (2320 HKT) February 18, 2015
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Browse through scanning electron microscope images of rows of limpet teeth, discovered by UK researchers to be the strongest substance known to man. A. Barber, U. Portsmouth/N. Pugno, U. Trento
An overview of the teeth, which maintain their strength regardless of their size, said Professor Asa Barber from the University of Portsmouth who led the study. University of Portsmouth
A close up of a Limpet tooth. University of Portsmouth
The mineral known as goethite is pictured here, which forms in the limpet as it grows and enables them to move over rock surfaces and feed on algae while the tide is in. University of Portsmouth