@inspirgreen: This crab didn’t just move, it upgraded instantly. Hermit crabs can’t grow shells, their abdomen stays soft for life, so every switch is survival. When the fit is right, they change in seconds. Too small blocks growth, too large makes them slower and easier prey. Some species even form shell chains, lining up to swap in order. One empty shell can pass through multiple crabs in under a minute. Nature is optimization, not comfort. cc: PropositoyVida #nature #Science #wildlife #animals #facts

inspirgreen

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Wednesday 18 March 2026 07:15:44 GMT