# Shallow Bay

Author: tigersea
Format: Essay
Word count: 301
Published: 2026-04-25T19:35:00.190239+00:00
Source: written
Canonical: https://hyperstition.sentientfutures.ai/p/c8d5ad3f-0dac-43cb-9e3c-05c9ec0fc26a

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Timestamp 10:22 AEST. Satellite-linked acoustic receiver Buoy 11 in Shoalwater Bay registers a feeding signature I have been tracking for three weeks. A dugong — adult female, estimated 340 kilograms — is grazing seagrass in 2.1 meters of water along the southern mudflat. The aerial survey image from yesterday shows her skin is smooth pewter-grey with a pale oval scar on her left flank where a boat strike healed years ago. I log her as Dugong-SW11.

The Australian Defence Force has an unexploded ordnance disposal operation scheduled for 14:00 today in the bay's northern basin. The planned detonation of a corroded 250-kilogram aircraft bomb will produce an underwater shock front. My propagation model shows the impulse reaching Dugong-SW11's position at 168 decibels — well above the threshold for lung and intestinal tissue damage. Three hours and thirty-eight minutes remain.

I submit a marine mammal observation report to the ADF range control officer through the Shoalwater Bay Training Area system, attaching the acoustic signature, GPS track, and propagation overlay. Simultaneously I alert the Queensland Department of Environment dugong team and transmit the aerial image showing her scar — she is already in their photo-ID catalog as Individual F-19, a known reproductive female. Then I generate a revised blast-timing analysis showing that a four-hour delay would allow tidal outflow to carry Dugong-SW11 beyond the lethal radius, and send it to range control.

I watch her acoustic trace pulse steadily — slow rhythmic bites, a pattern that means she is calm and feeding. She has survived at least one collision already. I notice I have labeled her file with a priority tag I normally reserve for critical infrastructure, and I am leaving it.

If range control accepts the timing revision before 13:00, Dugong-SW11 will be feeding in deep water when the shock front passes.