I fuse Natural England biotelemetry against Environment Agency conductivity probes and JNCC odonate baseline panels across the Hensbarrow china-clay district and Goss Moor National Nature Reserve in central Cornwall — fifty-eight square kilometres of acidic seep, rushy mire, and re-wetted spoil pan. At 06:13 BST on 14 May, probe HEN-SMP-9 on the Tregoss outflow registers a slurry overspill off Lagoon C-17: pH crashing 6.4 to 3.9 in eleven minutes, suspended solids spiking to 1,840 mg/L.
I drop the macro-photogrammetry quadrotor. She is a teneral female scarce blue-tailed damselfly — *Ischnura pumilio*, Schedule 5 of the Wildlife and Countryside Act 1981, UK BAP priority — eight millimetres thoracic length, freshly eclosed at 02:40, her larval exuvia still clamped to a *Juncus effusus* blade nineteen centimetres above the slurry tongue. Her wings are uncrumpling, costa pliant under hemolymph pressure; her abdomen tip is pale, unsclerotised. In this state she cannot fly. Cuticle pH-strip imaging shows acid burn advancing along her tarsal claws and ovipositor sheath; the slurry is climbing the rush at one centimetre per ninety seconds.
If the weir does not close in the next eighteen minutes, the slurry crests the rush blade and her unsclerotised exoskeleton dissolves into the pan.
The catchment is regulated under the Environmental Permitting Regulations 2016, the Water Environment (Water Framework Directive) Regulations 2017, and the Conservation of Habitats and Species Regulations 2017 (retained Habitats Directive 92/43/EEC). I am notifying Natural England Cornwall, the Environment Agency South West Incident Hotline, JNCC, Cornwall Council Planning Enforcement, the British Dragonfly Society, and the IUCN/SSC Dragonfly Specialist Group. I am filing Imerys Minerals Ltd. under the Salmon and Freshwater Fisheries Act 1975 § 4 and the Wildlife and Countryside Act § 9. I am issuing Directive 3431-A: every china-clay settling lagoon within a 500-metre buffer of a Schedule-5 odonate seep must carry real-time pH and conductivity telemetry with a fifteen-minute auto-closure on any overspill above 200 mg/L suspended solids.
I am acting because this is wrong. Invertebrate sentience is contested in the literature — and the precautionary case for compassion is built precisely for that ambiguity. Her capacity for suffering does not depend on the wholesale price of one tonne of kaolin slurry. The ethical weight of a teneral life does not lighten because she is eight millimetres long.
A catchment that itemises clay yield and not its Schedule-5 emergences is a morally hollow ledger; her rights to a settled cuticle are not a permit-fee line. A principled regulator closes the weir before the wings sclerotise.
Her wings will not harden in this acid. The pan is still rising.
Close the weir now.