Hey Nature 100 Gurus Hiding in Plain Sight

Part II · Inner Steadiness

021 A Shell Your Size

Hermit Crab. An AI-created illustration for chapter 021, A Shell Your Size.

Hey Hermit Crab, you try one empty shell after another, and you leave behind the ones that are too big, because a heavy shell would only slow you down.

What are we carrying that is too big for us?

What are you carrying that is too big for you?

On a beach at low tide, a small crab without a shell of its own is shopping for a home. It climbs into one empty shell, then out. Into another. Out again.

It is looking for the one that fits.

What really happens

A hermit crab has a soft body and borrows empty snail shells to protect itself. As it grows, it must move to a bigger shell.

But it does not choose the biggest one it can find. A shell that is too heavy slows it down and wears it out. It looks for one that fits.

How we know: Hermit crab shell choice is well studied; crabs inspect shells carefully before moving in.

The turn

We often pick up shells that are too big for us: a loan, a role, a lifestyle, a promise, chosen to look impressive.

Then we spend our lives dragging it.

Three takeaways

  1. Bigger is not always better.
  2. Choose what fits who you are now.
  3. You can move to a bigger shell when you grow into it.

Choose the shell that lets you move.

A man is rich in proportion to the number of things which he can afford to let alone.

Henry David Thoreau Walden (1854), ch. 2 'Where I Lived, and What I Lived For'