CRAB
A hermit crab scuttled along the ocean floor. The plastic bottle cap on its back cut into its soft flesh, but a house was a house and a hermit crab had to take whatever it could get in these trying times.
A hand reached down from the surface. The crab scurried away, but its makeshift shell bumped against its legs, and the fingers scooped underneath it, carrying it out of the water. The crab rushed forward in a blind panic, only to strike the side of a bucket. It made a ring around the enclosure, then stopped when it realized there was no escape.
The crab huddled under the bottle cap, raised its claws, and waited. The hand descended. The crab pinched at it, but the fingers stopped out of its reach. Another shell plopped into the bucket, and for a moment, the crab thought it had a fellow prisoner. Cursory examination of the shell revealed it was empty.
Another shell plopped from the heavens. And another. Soon, the crab was surrounded by free real estate.
Wary of a trap, the crab nudged the shell. It felt heavy, far too heavy for the calcium carbonate of a proper shell, and yet the metal moved easily with the crab's claw. The crab poked one eyestalk inside and beheld heaven. Temperature-regulated cushions, refrigerated pouches for food storage, a GPS system and depth meter, sonar, propulsion system, and built-in laser cannons for surface and underwater combat.
The hermit crab hurled the bottle cap aside and nestled inside the mechanical shell. The shell's surface lit up with bright, threatening colors, and a plasma cannon torched a seagull out of the sky.
The hand reached down once more. Reverently, the crab climbed aboard, and the hand returned it to the ocean from whence it came.
The hermit crab sauntered across the ocean floor, marveling at the way its glittering shell cast colored shadows across the peaks and valleys sculpted by the ocean waves. A fish darted close, lured in by the alluring glow. The hermit crab fried its head off, snacked on its eyeball, and tucked its organs in its pouch for a later snack.
An octopus crept across the sand, nearly invisible with its mottled camouflage. The hermit crab of old would've been scooped out of its pitiful plastic hovel, but this newly forged crab of metallic splendor detected its ping on the sonar. It brought its laser cannons to bear, raised its claws high, and hissed out its battle cry.
The octopus raised its own laser cannon. The hermit crab didn't even have time to scream before the octopus fried it in its own shell.
On the sandy shore, Eri ran up to Izuku and asked, "What'cha doing?"
"I am aiding the local marine wildlife by augmenting their habitation," Izuku said, "Thus fulfilling the volunteering requirements for U.A.'s curriculum."
The water rocketed upwards as a nuclear bomb detonated on the seafloor.
"Looks like they need more guns. I shall provide."
499
Izuku: Ekology
If we're going to acidify the oceans and diminish the supply of hermit crab housing, the least we could do is give them an upgrade.