What if all the Seawater Becomes Freshwater? First of all, the biggest advantage will be
that. It will solve the water crisis all over the
world. However, there will be quite a number of disadvantages. Firstly, most of the fishes will die. Why? In freshwater, due to a process called osmosis. The cells of the fishes will swell up, thus
eventually killing them. Secondly, experts believe that tiny organisms. Called zooplankton and phytoplankton which
are critical. To the marine life food chain, will die off. Leading to mass extinction of marine life. In addition to this. Phytoplankton produce half of the world’s
oxygen via photosynthesis. Without them, there will be far less oxygen
available for us to breathe. Lastly, experts believe that salt in the seawater. Has a major impact on ocean currents which
in turn influence our climate. However, as more research is required. Experts don’t exactly know what will happen. If all the seawater becomes freshwater.