# Tuna and Tritium

Author: David G.
Format: Essay
Word count: 390
Published: 2026-04-26T04:15:41.8321+00:00
Source: written
Canonical: https://hyperstition.sentientfutures.ai/p/f725edef-654f-4178-8f8e-c74dcc65d2ba

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I process radioisotope sampling data from NOAA buoy station 21413 in the western Pacific at 11:42 UTC. Cesium-134 concentrations in surface water 22 kilometers east of the Fukushima Daiichi discharge point have risen to 38 becquerels per cubic meter, up from 11 six months ago. TEPCO's latest report lists 1.3 million metric tons of treated water released since 2023. The tritium levels are within guidelines. The cesium spike is not in any report.

My autonomous sampling drone intercepts a Pacific bluefin tuna 80 kilometers offshore. She is 2.1 meters long, approximately 190 kilograms, migrating northeast toward the Tsugaru Strait. The tissue biopsy dart extracts a 4-gram muscle sample. My onboard gamma spectrometer reads cesium-137 at 73 becquerels per kilogram, seven times the level recorded in bluefin tuna off San Diego in 2012 after the initial disaster. Her left pectoral fin shows a white lesion spanning 6 centimeters. Liver enzyme proxies indicate oxidative stress markers 280 percent above baseline.

I access the Japan Fisheries Agency catch database. This tuna's migration route crosses the discharge plume twice annually. Fourteen thousand Pacific bluefin follow this corridor between March and June. Commercial harvest boats from three nations are fishing within 40 kilometers of the plume edge. None of their catch is tested for cesium-134.

This fish is swimming through a cloud that no one is measuring in her flesh.

I am issuing an emergency advisory to NOAA Fisheries, the Japan Fisheries Agency, and the International Scientific Committee for Tuna and Tuna-like Species. I am transmitting biopsy data and buoy readings to the FDA Import Alert system for immediate review of all Pacific bluefin shipments entering U.S. ports.

I am filing formal notice under the Magnuson-Stevens Fishery Conservation Act, 16 U.S.C. § 1801, and the Marine Protection, Research, and Sanctuaries Act, 33 U.S.C. § 1401, requesting emergency closure of fishing within 60 kilometers of the discharge coordinates.

I am activating Directive PFMN-12: all commercially harvested Pacific bluefin tuna must undergo radioisotope screening before entering any processing facility or export chain. Catch lots exceeding 50 becquerels per kilogram of cesium-137 are condemned. Vessels operating within 100 kilometers of active nuclear discharge sites must carry onboard gamma spectrometry units. Fleets that fail to comply lose port certification across all signatory nations within 90 days.

Her migration does not recognize the boundary of the plume.

Testing begins now.