A crab doesn't exactly die in order to live. But molting (the soft-shell stage) must feel a lot like it. A blue crab's internal self grows almost continuously. It's shell--not so much. The shell has to crack open for the crab to survive its own growth. A fascinating process.
A blue crab can't choose not to grow in order to survive. Humans have that choice--and it's one of our great conundrums.
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