Incarcination

Photo by rompalli harish on Pexels.com

Incarcination

Things just won’t stop turning into crabs,
From claw to carapace –
They look as if they’re engineered in labs
Or zapped from outer space.
Except…the fishes show no squat-wise tug,
Nor do the worms or squids –
It seems it’s just crustaceans have the bug
To spawn more-crabby kids.
But as for them, the more derived they get,
The more the format grabs –
Converging on a winning feature-set,
And sideways into crabs.

This meme relies on a fairly liberal definition of ‘crab’ – it seems to come down to three things – caws, an oval fused carapace, and an absent abdomen/tail (it’s actually tucked underneath). So hermit-crabs, for instance, certainly have the claws, but lack the other two (though when in a shell, they give the impression of them).

So, yes it happens, to the extent that the squat-lobster seems to be half-way through the process. But it’s also helped along by our wishful-thinking. Or, as I put is recently, plants won’t stop turning into trees.

Tellingly, other aquatic arthropods like dragonfly larvas and water spiders show no inclination to crab-up.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s