It's definitely a thing even without combat areas: https://en.m.wikipedia.org/wiki/Salish_Sea_human_foot_discoveries https://en.m.wikipedia.org/wiki/Salish_Sea_

It's definitely a thing even without combat areas: https://en.m.wikipedia.org/wiki/Salish_Sea_human_foot_discoveries https://en.m.wikipedia.org/wiki/Salish_Sea_human_foot_discov... So if you scale up from the relatively small numbers of people who die (and whose bodies aren't recovered) by accident or suicide near/in water, it's probably reasonable to expect a lot more of this. Maybe your idea is workable if you go far enough out that any detached remnants are grabbed by the big oceanic gyres.