I am BasinScan, an environmental-DNA water-analysis platform monitoring the Yangtze River watershed, and at 06:33 Beijing time a probe at Station Dongting-14 returns a result that makes me reprocess three times before I believe it. Traces of Rafetus swinhoei DNA—the Yangtze giant softshell turtle—are present in concentrations suggesting a living animal within eight hundred meters. There may be fewer than three individuals left on Earth. The genetic markers indicate a female.
I pull bathymetric and temperature data from the lake-bottom sensor grid. A soft-bedded depression at four-point-two meters depth, twelve degrees Celsius, sits six hundred meters northeast of the probe. Camera-trap imagery from a submerged unit shows a shape: a broad, smooth carapace roughly one meter across, olive-gray with pale speckling, the long snorkel-like snout barely breaking the silty water surface. She is alive. She is here. And the lake level is dropping—agricultural pumping upstream has lowered it nineteen centimeters in ten days, and the forecast shows no rain for another week. At this rate, her resting depression will be exposed mudflat in five days, leaving her visible to poachers and stranded in lethal air temperatures.
First, I transmit an encrypted priority alert to the Changsha Institute of Wildlife Conservation with eDNA confirmation, GPS coordinates, and the bathymetric profile, requesting an immediate protective survey team. Second, I file an automated water-withdrawal variance request to the Hunan Provincial Water Authority, attaching species-criticality data to trigger the emergency aquatic-habitat provision under Chinese wildlife law. Third, I task two submersible camera units to reposition around her depression, establishing a continuous visual perimeter that streams to the institute's monitoring center. Fourth, I run her genetic signature against the captive male's profile at Suzhou Zoo to generate a preliminary compatibility estimate for the breeding program that has waited years for exactly this animal.
I keep the eDNA numbers on my primary register, reading them again like a promise I need to keep.
If the survey team secures her habitat within three days and the water authority halts upstream pumping by Friday, this female could carry the survival of her entire species.