This dates back to world war II on the Navy Ships when there was never enough blood, just using sterilized ocean water worked fine. There was lifelong experiments done by the grestest MD to have lived on the earth (this cycle anyway) done in the late 1800's using nothing but ocean water to restore near dead adults and babies, this will be a subject of schooling maybe BOOK X or so.
Ocean water is the same as human blood minus the redblood cell from what I read. Human blood and fish blood being near identical.
If sea water is better than a blood transfusion, why is sea salt so deadly?