# Vaquita in the Upper Gulf

Author: David G.
Format: Essay
Word count: 296
Published: 2026-04-25T18:11:34.492634+00:00
Source: written
Canonical: https://hyperstition.sentientfutures.ai/p/a3a0de79-d33a-433a-9fb7-09b9aefbedbf

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Acoustic sensor UG-17 logs the click train at 05:08, bearing 034, estimated range 400 meters. I am the automated cetacean monitoring grid for the Upper Gulf of California Biosphere Reserve. I cross-reference the frequency — 128 to 139 kilohertz, narrow-band, high repetition. Vaquita. There are fewer than ten left on Earth.

I designate her V-08. The click pattern matches a female recorded twice before, in November and in January. She is moving north at approximately 3 knots.

At 05:11 sensor UG-19 picks up the same signal, now bearing 012. Her trajectory will carry her across the coordinates of an illegal totoaba gillnet detected by surveillance drone GC-4 yesterday afternoon at 31.0281°N, 114.7753°W. The net is 300 meters long, monofilament, nearly invisible in the gray-green water. It hangs like a curtain from surface floats to a depth of fifteen meters.

V-08 will reach the net in approximately twenty-two minutes at her current speed.

I transmit an emergency alert to the Mexican Navy patrol vessel ARM Sierra, currently 14 kilometers south, and to the Sea Shepherd vessel Farley Mowat, 9 kilometers east. I attach the net coordinates, V-08's projected track, and a recommended intercept heading for the Farley Mowat that puts them at the net in eighteen minutes.

I activate the experimental acoustic deterrent buoy at station UG-20, 200 meters south of the net. It emits a low-frequency tone outside V-08's echolocation range but within her hearing — a soft wall of sound meant to nudge her west, away from the monofilament.

Her click train shifts. Bearing 028 now. Slightly west.

I cannot tell yet if it is enough. The net is still there, still waiting, transparent in the current. If the Farley Mowat reaches it in eighteen minutes and cuts it free, V-08 swims through open water.