Board Thread:Off Topic/@comment-25396609-20190908002326/@comment-36926079-20191028044453

Well, yeah. There isn't Grimm everywhere, but it's not accurate to say they don't exist or are as dangerous as sharks and jellyfish. Sharks and jellyfish aren't very deadly compared to how many people die from mosquitos.

The problem with saying that scuba equipment must exist because aquatic grimm are not an everpresent danger is that you neglect how ineffective early diving equipment was. Without the advent of the industrial age, diving would not have become a widespread practice. Because Remnant has no equivalent for compressed air besides wind dust that would all activate at once unless controlled by heavily mechanized equipment or aura, rebreathers would be only invented in their equivalent of the 1830s at best. Compressed air would not be used in many other ways, so there would be no need to create compressed air that could be safely and easily be transported on someone's back. If you add the social stigma that come with dangerous monsters living in the ocean that hunters struggle with as much as those in the air, it seems reasonable that rebreathers as we know it are a highly exclusive product that would be made obsolete by submersibles.

TLDR: Saftey issues, a lack of mechanization, and a lack of demand mean that the rebreather as we know it would likely be a recent invention that would be made obsolete with the introduction of Atlesean submersibles.