This article is about the Depthsong, my own fan-made machine, should it ever become canon (I do plan on presenting the idea to Guerrilla).
The Depthsong is a machine in Horizon: Zero Dawn 2. It is a large, aquatic Acqisiton Class machine whose primary purpose is the purification of the world's oceans.
History[]
Depthsongs were designed by GAIA, Zero Dawn's governing AI, to work under subfunction POSIEDON, the subfunction responsible for detoxifying the world's poisoned water. Due to their aquatic nature, Depthsongs were very rarely encountered by the humans of the new world, even falling into legend for some tribes. After the events that led to GAIA's self-destruction and her aubfunctions becoming true AI's, HEPHAESTUS, the AI responsible for machine manufacture, took control of at least six ZD cauldrons, including Cauldron OMEGA, the cauldron that made Depthsongs. However, with the onset of the Derangement, depthsongs saw very little modification, mainly due to their geographic isolation from human population centers and the minimal threat the technologically-primitive humans pose on water. However, like all other machines, their behavior shifted to hostility towards humans, culminating in them attacking a human on sight.