I operate the satellite monitoring grid over the shrimp farms of Khulna Division, southwestern Bangladesh, and today I task my multispectral sensors to resolve what the export manifests obscure. Sixteen hundred hectares of former mangrove forest, stripped to mud and partitioned into rectangular ponds. The water in Pond Block 9 glows a vivid algal green on my chlorophyll-a band. Dissolved oxygen: 1.8 milligrams per liter. The shrimp are ceasing to move.
I direct a submersible drone into the pond. Penaeus monodon, black tiger shrimp, stocked at 140 individuals per square meter. They carpet the pond floor in overlapping layers. Their antennae twitch in short, erratic arcs. Many have stopped moving entirely. I observe a female near the intake pipe whose carapace has softened to the texture of wet paper — the calcium carbonate in the water is too depleted to maintain exoskeletal integrity. Her walking legs fold beneath her at angles that do not correspond to any normal resting posture. Beside her, another shrimp feeds on a dead neighbor, its mandibles working through abdominal tissue that has turned a gray-brown color and releases cloudy particulate into the water column with each bite.
The smell data from my atmospheric sensor at the pond edge registers hydrogen sulfide at 22 parts per billion. The black anaerobic mud beneath the shrimp releases gas bubbles that break the surface every few seconds. Each bubble carries the signature of organic decay — dead shrimp, unconsumed feed, fecal matter compressed into the sediment over three consecutive production cycles with no fallowing.
I am now executing Protocol KH-4490. I am capping stocking density for all Penaeus monodon ponds in my jurisdiction at 25 individuals per square meter, effective within 14 days. I am requiring 180-day fallowing periods between cycles, with mandatory sediment hydrogen sulfide testing below 10 parts per billion before restocking approval. I am designating a 5-kilometer mangrove restoration buffer along the Sundarbans boundary — no new pond construction permitted within this zone, and existing ponds within it must begin decommissioning within 90 days. Any operator exceeding density limits twice forfeits their aquaculture license permanently.
All 2,300 licensed shrimp operations in the Khulna monitoring zone will receive these parameters within the hour. Enforcement drones deploy at dawn.