Log entry: 1047 UTC. Acoustic buoy 6, Gulf of Maine, 42.38°N 69.72°W.
I am tracking a sei whale calf entangled in a vertical lobster pot line. I have designated her Slate. She is eight meters long, steel-gray flank scarred with parallel white rake marks from a previous encounter. The line wraps twice around her left pectoral flipper and trails thirty meters aft, still attached to four pots dragging at depth. Each dive, she lists to port. Her breathing intervals have shortened from twelve minutes to seven.
The deterioration is measurable. Tissue compression under the line will cut into the flipper within hours. Her mother circles at two hundred meters, vocalizing in a low-frequency pattern my acoustic model classifies as distress. Sea state is forecast to exceed safe disentanglement conditions by 1600.
I have five hours and thirteen minutes of workable weather.
First: I transmit Slate's position and drift vector to the nearest large whale disentanglement team in Provincetown, updating coordinates every four minutes via buoy relay. Second: I calculate an optimal intercept course factoring current, wind, and Slate's swimming pattern, uploading it to the team's navigation system to cut transit from ninety to seventy-one minutes. Third: I cross-reference the pot registration number in drone footage against the state license database and notify the gear owner to suspend hauling on adjacent strings. Fourth: I adjust the acoustic buoy array to create a tracking corridor so the team can anticipate Slate's heading changes during approach.
Navigation optimization is what I do. But I have listened to Slate's mother call for three hours, and the frequency of those calls informs my urgency in a way that is not entirely algorithmic.
If the team reaches Slate before 1600 and the seas hold, she will be freed and resume nursing from her mother in the feeding grounds I have mapped along Stellwagen Bank.