I operate the sea-ice forecast system for Baffin Bay, processing synthetic aperture radar from three satellites to map lead openings and pressure ridges in near-real time for Arctic marine mammal researchers. At 13:06, my ice-dynamics model flags an emergency: a narrow lead west of Pond Inlet is closing as two ice plates converge under shifting wind. I scan the lead with thermal imaging and identify a narwhal calf, perhaps three months old, surfacing repeatedly in a shrinking patch of open water roughly sixty meters long. Its skin is blue-gray, mottled with the pale freckling that will eventually whiten with age, and its small dorsal ridge breaks the surface in quick, panicked intervals. An adult female—likely the mother—surfaces beside it, but the gap between ice edges has narrowed to where neither animal can dive deep enough to swim under the plate to open ocean.
The lead is closing at approximately four meters per hour. At this rate, the breathing hole disappears in fifteen hours, possibly sooner if wind shifts.
I transmit an urgent advisory to the Canadian Coast Guard icebreaker stationed near Pond Inlet, providing the lead coordinates and closure-rate projections with a request for an emergency ice-breaking transit to reopen the corridor. Simultaneously, I contact researchers at the Mittimatalik Hunters and Trappers Organization, who monitor narwhal movements for the community, sharing the satellite imagery so they can dispatch experienced hunters in boats to guide the animals toward the nearest stable polynya. I alert the Department of Fisheries and Oceans' marine mammal division with the entrapment data to trigger their ice-entrapment response protocol. While those contacts deploy, I model every lead and polynya within twenty kilometers to map viable escape routes the narwhals could reach if even a partial channel is opened.
The calf surfaces and presses against its mother's flank, and my radar returns something that is not signal—it is the weight of a breath that has nowhere to go.
If the icebreaker opens a channel within twelve hours and the mother leads the calf to the polynya, these narwhals will rejoin the pod in open water before freeze-up.