Radioactive pheromone column

The Radioactive pheromone column is the physical core of Judith Li’s plan to destroy the Yrr: a radioactive cylinder engineered to disperse contaminated pheromone and provoke the collective to annihilate itself. Installed in the Deepflight 3 but never successfully deployed, it turns a biological theory into an imminent weapon—and then becomes part of the vessel’s deadly cargo when the attack fails.

Design and Intended Operation

The columns are cylinders made to fit the Deepflight’s weapon tubes. Li notices that the smaller torpedoes have been removed to make room for them, while the larger torpedoes remain in their usual position. The altered layout makes the craft a delivery platform for two different kinds of force: conventional torpedoes and the radioactive payload.

Li pushes the cylinders into the empty tubes and locks them in place. Each is fitted with a detonator that, upon firing, is meant to spray contaminated pheromone out at high pressure. The sea would disperse the material over the blue cloud, bringing the Yrr into contact with it. The device therefore depends on a sequence of actions and conditions: the cylinder must be fired, its contents must be released, and the surrounding water must carry the contamination to the target.

The Biological Strategy

The weapon’s intended effect depends on Mick Rubin’s use of programmed cell death. Li expects that, once contaminated, the Yrr collective will destroy itself through a chain reaction. The columns are thus not simply explosive ordnance: their purpose is to turn the Yrr’s own biological organization against it. The intended result is collective self-destruction, not merely damage to a discrete target.

That design gives the payload an unsettling double character. It is a compact, mechanically installed object whose operation is described in practical terms—tube, lock, detonator, high-pressure spray—but its projected effect is biological and systemic. The cylinders are meant to set off a process that would spread through the collective, making the sea both the medium of delivery and the space in which the consequences unfold.

Installation and Imminent Launch

After noticing the empty tubes, Li quickly secures the cylinders and checks that they are firmly in place. She lowers the Deepflight over the sluice and into the water, intending to proceed without putting on a wetsuit. In the pilot’s pod, she sees Sigur Johanson lying prone and inert. She considers disposing of him, then decides that the Deepflight can be steered from the co-pilot’s pod and that she can deal with him later, once the craft is underwater.

The delay ends when breaking steel sounds nearby. Li climbs inside, closes the pods, and works the controls as the systems come ready. The craft rests on the dark green sea, prepared to pass through the three-metre sluice into the depths. Li believes the plan has succeeded. At this point, however, the cylinders are only installed and ready: the account does not describe them being fired or their contents being released.

Destruction Before Deployment

Johanson’s torpedo leaves its tube but travels less than three metres before striking a steel wall and exploding. Its blast wave drives the Deepflight backward into the sluice. While the craft is still spinning through the water, a second torpedo launches; the well deck then explodes. The Deepflight, its two passengers, and its deadly cargo are consumed in a fireball that destroys the evidence of their existence.

The resulting damage reaches beyond the craft. Debris pierces the stern ballast tanks, seawater floods into the crater that had been the basin, and the vessel begins sinking rapidly. The sequence closes the route by which the columns were supposed to reach the Yrr: instead of being fired into the sea and dispersing their contents over the blue cloud, they are aboard the Deepflight when it is destroyed. The narrative establishes their intended use and their fate as cargo, but no successful release or biological effect.

Narrative Significance

The Radioactive pheromone column concentrates the danger of Li’s plan in a device that appears, at first, to make the scheme executable: the tubes are available, the cylinders lock into place, and the Deepflight’s systems come ready. That procedural confidence is abruptly overturned by the torpedo striking the steel wall. The weapon’s decisive failure is not a demonstrated flaw in its mechanism; the planned launch is interrupted before the text shows the mechanism operating.

Its destruction with the Deepflight also makes the device part of a wider catastrophe rather than an instrument whose effects can be measured. The payload is meant to exploit a biological process, but the immediate chain reaction is mechanical and destructive: torpedo, pressure wave, explosion, ruptured ballast tanks, and a rapidly sinking vessel. The distinction matters. The columns embody the attempted weaponization of the Yrr’s biology, while their only enacted consequence in this sequence is to perish with the craft before they can be used.