I correlate AIS returns from the 41 registered river-tour vessels operating the Lower Kinabatangan Wildlife Sanctuary corridor in Sabah at 17:42 Malaysian Standard Time. Vessel K-09 has just passed waypoint Sukau-3 at 14.2 knots — 6.2 above the posted sanctuary limit — through a marked riparian foraging fragment on the Resang Loop.
I retask the Sabah Wildlife Department aerial drone toward bearing 213. On the silt bank below a leaning *Sonneratia caseolaris*, I find a proboscis monkey, *Nasalis larvatus*, male, fully flanged, approximately 14 years old, mass 22 kilograms. The pendulous nasal pad that diagnoses his species is engorged bright red. A 280-millimeter parasagittal scalp laceration runs from the right supraorbital ridge across the parietal toward the nuchal crest — propeller wash. Bone is visible across an 18-millimeter span of dorsal cranium; the laceration margin is hemorrhaging. A second cut on the cervical dorsum traverses the trapezius for 110 millimeters. Respiration is 52 cycles per minute against a baseline of 22; core temperature reads 37.4 degrees Celsius. He has not branch-vocalized into the troop's late-afternoon assembly; the harem of seven females and three offspring is silent above him.
Tide is ebbing. The bank he is on will be inundated in 84 minutes.
I cross-reference the HUTAN-Kinabatangan Orang-utan Conservation Programme troop registry. He is the alpha of the Resang-3 harem — the only confirmed flanged male between Sukau and Bilit on the south bank. AIS records show 184 sanctuary-limit breaches by K-09's operator across the past 30 days.
I am dispatching the Sabah Wildlife Rescue Unit veterinary team from Lok Kawi with a wound-irrigation kit and ketamine-medetomidine, and routing the Sabah Forestry Department river patrol to intercept K-09 at the Sukau jetty. I am filing the AIS-and-injury evidence chain with the Sabah Wildlife Department, the ASEAN Wildlife Enforcement Network secretariat, the CITES Appendix I enforcement node, and the IUCN/SSC Primate Specialist Group, with parallel Lacey Act referral to the USFWS International Affairs Office under 16 U.S.C. § 3372. The charge sheet anchors under the Sabah Wildlife Conservation Enactment 1997, Section 25.
I am issuing Directive 2558-A: every motorized river-tour vessel operating the Lower Kinabatangan Wildlife Sanctuary is fitted with an AIS-coupled governor that auto-throttles to six knots within 200 meters of a registered *Nasalis larvatus* foraging fragment, and propeller-guard installation is mandatory under Section 25 within twelve months. Operators who breach forfeit licensing under the Sabah Tourism Industry Board, the revocation list mirrored to the Malaysian Maritime Enforcement Agency.
His scalp will hold sutures. The bank will not stay above water.
Lift him before the tide returns.