'Way out on the sand dunes or under a bush
Lives a critter so cute, and so clever!
He wears a smart shell on his cute little tush,
And his habits are quite an endeavor.

One evening you might see him looking for lunch.
Hermie eats off the land, like a scout.
He is fond of the beach-growing grass he can munch-
He's delighted to find a small sprout.

As he grows, Hermie knows he must find a new shell
That is bigger and better-more roomy.
If he's lucky, he finds one, and chuckles, 'Well, well!
I think this pretty murex will do me! '

So he climbs out the doorway without looking back
And he takes not a shirt nor a spoon.
No suitcase, no bag, and no trunk does he pack
When he moves by the light of the moon.

He walks backward to enter his spacious new place,
Then he digs a new basement below.
Can you see the big grin on his funny crab face?
He'll be safe when the sea breezes blow!

Yen Cress

http://www.poemhunter.com/poem/hermit-crab-s-moving-day/