Field note. The organism cannot tolerate direct contact between its lowest limbs and the surface of the planet.
Each morning the specimen retrieves two hollow molded husks, one for the terminal appendage on the left, one for the right, and inserts a foot into each. The husks are lined with a compressed textile that has absorbed the foot's exuded moisture and volatile compounds over many cycles; the organism does not appear to register this, though other organisms in proximity clearly do.
The husks are then sealed with a woven filament, drawn taut and knotted in a repeating pattern the specimen executes without looking. I have timed this. Four seconds per foot. It has performed this binding perhaps forty thousand times and can no longer recall learning it.
The lower surface of each husk is engineered against friction and impact, hardened, treaded, replaceable. This is efficient. What is not efficient: the specimen owns eleven pairs. Only one pair contacts the ground on a given day. The remaining ten wait in a stacked dark enclosure, structurally identical, differing only in surface pigment and the arrangement of decorative filament.
The specimen selects among them each morning with visible deliberation, holding two husks aloft, comparing, discarding one. No terrain has changed. No function is affected.
I have concluded the husks are not primarily protective. They are a signaling apparatus. The organism broadcasts something to other organisms through the color and wear of its foot-shells, a transmission it believes is being received.
Correction. I observed the specimen retire a pair that still functioned perfectly, place it in a box, and store the box, unworn, untouched, for reasons I cannot resolve. It kept the empty husks of a self it used to be.
I have no column for this.