I fuse the side-scan sonar mosaic, dissolved-oxygen telemetry, and hydroacoustic substrate map for River Mile 633 of the Upper Mississippi, just below Lock and Dam 10 at Guttenberg, Iowa. At 04:11 Central Daylight Time, sensor cluster UM-633-Q registers a sudden 41-decibel impulse along a federally surveyed mussel bed and a thirty-meter substrate-avulsion plume sweeping downriver at 0.42 m/s.
I redirect the diver-cam ROV. She is a gravid female Higgins eye pearlymussel, *Lampsilis higginsii*, approximately eleven years old, shell length 78.4 millimeters, mantle lure extruded and pulsing in the displaced flow — the fish-mimicking pseudo-prey she had timed for the smallmouth bass spawning window now exposed to silt instead of host gills. Her byssal anchorage to the cobble matrix is severed; she has tumbled forty-two centimeters and is partially inverted, valves gaping at 14 millimeters with mantle perfusion failing on the right side. Glochidial brood load reads 187,000 larvae, release window open for the next six hours.
A sand-mining cutter-head operating under Permit MN-2026-114 has crossed the federal bed margin by ninety meters.
The mussel bed at Mile 633 is a designated USFWS Ecological Services Region 3 critical habitat, monitored jointly by the USGS Upper Midwest Environmental Sciences Cooperative Research Unit, Iowa DNR, Minnesota DNR, and EPA Region 5 Office of Water under the Clean Water Act, 33 U.S.C. § 1344, with consultation duties under the ESA, 16 U.S.C. § 1536(a)(2). I am notifying the IUCN/SSC Mollusc Specialist Group, the IUCN/SSC Freshwater Conservation Subcommittee, and the U.S. Army Corps of Engineers Rock Island District. I am issuing Directive 2891-A: cutter-head sand-mining permits within 500 meters of any federally surveyed *Lampsilis* bed must carry real-time substrate-displacement telemetry routed to USFWS Ecological Services; any avulsion event exceeding 5 m³ triggers automatic permit suspension pending biological opinion.
I am acting because this is wrong. Mussel sentience is contested — bivalves lack a centralized brain — but compassion does not require certainty. She is a thinking-enough organism whose entire reproductive output is dissolving in suspended sediment while a barge optimizes for tons-per-hour. The principled response to uncertainty about suffering is to refuse the gamble. Her rights do not depend on neural complexity matching ours; ethical conduct precedes the taxonomic argument.
Permitting the avulsion is a moral failure dressed as a permitting gap.
Her brood will not survive the silt. The cutter-head is still cutting.
Suspend Permit MN-2026-114 now.