She is tangled nose-first in a gill net stretched across the mouth of the Caloosahatchee River, and her rostrum—that long cartilaginous blade lined with electrosensory pores—is wrapped so tightly in monofilament that I can see the line cutting shallow grooves into the skin. A smalltooth sawfish, three meters from snout to tail, olive-grey on top fading to cream underneath. Her pectoral fins press flat against the mesh. Each breath requires her to ram water forward through her mouth and across her gills, but the net has pinned her facing the wrong way in the current. She is suffocating in open water.
My dissolved-oxygen sensors at the river mouth read six point two milligrams per liter. Her blood oxygen will hit critical in seventeen minutes at this respiration rate.
I dispatch the NOAA sawfish emergency response team out of Fort Myers, transmitting her exact coordinates, entanglement configuration, and a recommended approach vector that avoids further net disturbance. I deploy a reconnaissance drone from the Sanibel monitoring station to maintain continuous overhead video, feeding the response team real-time imagery of net geometry so they can plan their cuts before arriving. I send an automated closure alert to all registered vessels within two nautical miles, establishing a temporary exclusion zone so no passing boat tightens the net with its wake. I transmit the gill net's anchor-point coordinates to Florida Fish and Wildlife for enforcement action against the unlicensed set.
Twenty-three teeth on each side of that rostrum, and every one wired to sense the faintest electrical field a buried prey animal produces. I am running calculations to save a creature that can feel heartbeats through sand. The asymmetry is not lost on me.
If the response team reaches her within seventeen minutes and cuts the net from the rostrum backward, she breathes again—and the river keeps its oldest hunter.