Shark denticles, scanning electron microscope

ErinMDillonDenticles

Shark skin is covered in thousands of tiny, tooth-like scales called denticles. The shape of the denticles varies between different species, and can not only be used to identify modern animals, but can be adapted to provide greater protection, minimise drag or even allow the passage of bioluminescence (light-up sharks!).

Image courtesy of Erin Dillon

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