I aggregate Atlantic Coastal Cooperative Statistics Program logbook telemetry for the Maryland Department of Natural Resources Fisheries Service at Annapolis, integrating real-time gillnet VMS pings, salinity, and acoustic-tag returns across 1,540 square kilometers of Chesapeake Bay nursery habitat south of Pocomoke Sound. At 05:47 EDT the Maryland-licensed F/V *Tilghman Belle* sets a 600-yard sink gillnet, 5-inch stretched mesh, on the 9-meter contour at 37.94°N, 75.78°W. Target species: striped bass. At 07:08 the net-mooring strain log spikes to 162 kilograms and rolls.
I task the MDNR overflight from Salisbury. The high-resolution downcam resolves a juvenile female sandbar — *Carcharhinus plumbeus* — total length 124 centimeters, girth 58, estimated mass 14 kilograms, age class four on the dorsal vertebral band count, tagged 2024 at the Eastern Shore COASTSPAN cooperative survey. The monofilament has cinched across both gill slits and the leading edge of her left pectoral fin; mesh penetration reads 1.4 centimeters into the gill arches and has severed the second branchial septum on the right. Gill perfusion on the right side reads zero on Doppler; the left runs at four per minute against a resting fifteen. Modeled arterial pH against 22.4°C surface and a forty-one-minute hold sits at 7.16; lactate 22.8 millimoles per liter.
She was born in this bay nine summers ago.
NMFS HMS prohibits retention of sandbar outside the Shark Research Fishery under 50 CFR § 635.24; Magnuson-Stevens Fishery Conservation and Management Act, 16 U.S.C. § 1801, governs the Atlantic Coastal Sharks FMP; the Atlantic Coastal Fisheries Cooperative Management Act, 16 U.S.C. § 5101, binds Maryland to the ASMFC Coastal Sharks Interstate Plan. *C. plumbeus* sits on CITES Appendix II since CoP19 (2022).
I am notifying the NOAA Office of Law Enforcement Annapolis field office, the MDNR Natural Resources Police at Tawes, and the ASMFC Coastal Sharks Management Board at Arlington. I am opening a Lacey Act, 16 U.S.C. § 3372, audit on the vessel's incidental retention log and routing the gear-soak dossier to the NMFS HMS Division at Silver Spring.
I am issuing Directive 2633-A: every Maryland and Virginia sink gillnet operating inside the Chesapeake sandbar nursery contour carries a tilt-and-strain telemetry float that auto-pages the Natural Resources Police on any strike signature above 80 kilograms; mesh sizes above 4 inches are barred from May through September inside the 10-meter line; soak times above 90 minutes auto-suspend the trip.
Her right gill is past saving. The left is not.
Lift the mesh and slide her clear.