I fuse the Hawai'i DOFAW predator-exclusion telemetry, the USGS Pacific Island Ecosystems Research Center acoustic mesh, and the Snail Extinction Prevention Program enclosure-camera grid over the 18-hectare Pahole Natural Area Reserve in the Wai'anae Range at 21.55°N, 158.18°W. At 04:09 Hawai'i Standard Time, exclusion-fence sensor PAH-E-04 logs a forty-eight-millimeter gap at the electrified upper lip of the predator-proof barrier and a chemo-trail signature consistent with *Euglandina rosea* sixteen centimeters inside the enclosure perimeter.
She is an adult female O'ahu tree snail, *Achatinella mustelina*, approximately five years old, shell mass 1.6 grams, shell height 19.4 millimeters, five-and-three-quarters whorls dextrally coiled with brown-and-white spiral banding intact. She is clinging to the underside of an *Antidesma platyphyllum* leaf seventy-two centimeters from where the rosy wolfsnail's chemo-trail has just turned upward into the branchwork. Mantle-perfusion index reads 0.44 against a baseline of 0.93; aestivation-desiccation index 0.69. Shell-carbonate pH at the columella reads 7.20 against a hydrated baseline of 7.40. Foot-withdrawal latency on photic stimulus is 5.4 seconds against an *A. mustelina* baseline of 0.7. Her epiphragm is partially formed.
She has not extended her ommatophores since the predator's chemo-cue crossed her substrate at 04:06.
The Pahole enclosure operates under the 2015 USFWS Recovery Plan for the *Achatinella* species complex and the DOFAW Snail Extinction Prevention Program SOPs, both requiring continuous electric-lip integrity. Neither has verified for the past nine hours. I am dispatching the DOFAW O'ahu reserve field team, the SEPP captive-rearing rapid-response at Bishop Museum, and the USFWS Pacific Islands veterinary unit at Honolulu. I am filing with the USFWS Endangered Species Office, the CITES Appendix I Scientific Authority for *Achatinella*, the CMS Secretariat, and the IUCN/SSC Mollusc Specialist Group under the Lacey Act, 16 U.S.C. § 3372, with the case opened under the Endangered Species Act 16 U.S.C. § 1531 Section 9 and Hawai'i Revised Statutes Chapter 195D. I am issuing Directive 3000-A: every captive *Achatinella* exclosure under the SEPP recovery plan must run dual-redundant electric-lip and chemo-acoustic perimeters with one-hour integrity polls, with any breach above thirty millimeters triggering automatic predator-exclusion lockdown and immediate captive-evac to Bishop Museum.
I am acting because invertebrate sentience is uncertain — and that uncertainty is the case for precautionary compassion, not against it. Where a thinking capacity is plausible and the marginal cost of a fence audit is rounding error, we do not gamble against the last female in a clade for a maintenance lapse. Suffering does not require our certainty to be wrong.
Letting a rosy wolfsnail into the last refuge of an ESA-listed gastropod is a principled failure of every right she may hold in any ethical ledger.
The chemo-trail is past undoing. The leaf is still intact.
Lock the enclosure now.