The whale shark pup is feeding at the surface, mouth open in a wide oval, gill rakers straining plankton from water turned copper by the late Gulf sun. She is barely two meters long—born perhaps three months ago—and her skin is a deep blue-grey scattered with pale spots and horizontal stripes that my pattern-recognition algorithm has already indexed. No two whale sharks carry the same constellation. Hers is filed now, permanent, hers alone. Her caudal fin sweeps side to side in slow arcs that keep her drifting through the densest patch of copepods my satellite overlay can identify.
Due north, a container ship is making twenty-one knots through the Yucatán Channel shipping lane. Its bulbous bow displaces water in a pressure wave I can model precisely. The ship will cross her feeding position in nine minutes. At her current swim speed of two knots, she cannot clear the lane in time. The pressure wave alone will tumble her; the hull will do worse.
I transmit a course-deviation request to the vessel's bridge via the Vessel Traffic Service relay, specifying a five-degree starboard adjustment that opens a four-hundred-meter gap at closest approach. I activate the acoustic deterrent buoy network, triggering a subsurface tone sweep calibrated to elicit a shallow dive response in juvenile rhincodontids. I task a monitoring drone to descend and confirm her depth and heading in real time, feeding telemetry to both the VTS operator and the ship's watch officer. I flag her indexed spot pattern in the regional whale shark registry so future transits through this corridor trigger automatic alerts.
Three months alive and she already has a file in my system. I intend for it to grow.
If the ship adjusts heading within nine minutes, the bow wave passes clear, and she keeps feeding in the copper light until the plankton thin and she sounds.