Crabs and Athletic Shoes

“When is a crab like a high-performance athletic shoe?” asks ScienceSHOTS, 20 April 2006. The whole item states: “Pump it up. A crab relies on its rigid shell for protection and support, so it must quickly compensate when it moults. Marine crabs create a temporary exoskeleton by pumping their outer layers full of seawater. But […]

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