Why should be drink seawater during dehydration?

Answer 1

Sea water is different to our body water levels. Sea water contains a lot of salts and by drinking sea water, we would ultimately be altering our isotonic levels. It has to do with osmosis and water gradients. I don't really think you should drink seawater during dehydration as it will only serve to dehydrate you more, as you are removing more water and replacing with salt, thus causing a hypotonic environment for your cells.