Once there was a crab who lived under a rock, thinking. The rock was flattish and shaped a bit like a big stony dinner plate. It had a couple of barnacles on it and a flea-circus style population of tiny invertebrates of one sort or another.
The crab liked it under the rock. It was dark and salty.
Was it better under the rock? Perhaps there was a whole new world out under the sky, or in the many tiny pools bunted with bubbly seaweed and anemones nearby. On the other hand, she wasn't a crispy sun-dried crab up on the beach like the ones coasted up on the tide.
She blinked an eye on a stalk. And then she blinked another eye on a stalk. She watched some pretty silica fragments run through a crack in the rock like a tiny marine lava lamp. She clicked a claw. Mmmm, watery, she thought.