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sea ​​urchins

The Black Sea urchin is one of the most common of the Red Sea urchins, and there we all already know to beware of it. Photo: Quartl, Wikimedia.

Sea urchins from Eilat invade the Mediterranean Sea

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sea ​​urchins Source: Nick Hobgood / Wikimedia.

Thorns and hedgehogs (in seawater)

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Sea urchin teeth. Credit Wise University

The kitchen knife that never wears out - the future of nanotechnology

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The digging technologies of the sea urchins will serve as inspiration for the design of digging machines

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