>>6145705I hate the migrators and have been trying to slowly retcon them out of the Quest.
But more seriously; they don't have a dueling tradition but I have thought a bit about how they might "fight". I think they do do it, but it'd be mostly based on social ostracizing one from a pod, essentially a banishment that denies them shared group heat, as well as sending out false or confusing signals for echolocation, which could waste multiple months worth of real-time in following a bad path.
The closest way one could actually "kill" another would probably be swimming directly above them and following their movements as closely as possible. By swimming over them you'd downdraft slightly colder water over them, while the slightly warmer water rises up to you, and you'd deny them the ability to move upwards to feed on the only food (which is created by microorganisms in the dim light under the ice sheet) since pushing up through another migrator would be too slow given they can't really swim faster. The only defense against this would be for the bottom migrator to upset their circadian rhythm and try to swim out from underneath the other one when the other one is in a deeper sleeping state.