its all about equalibrium! there are many many of natures solders out there doing their bit for nature! > fish are a prime example of it, they can actually effect the water around them to create a osmotic balancing effect! the top few layers of the skin on a fish is not far from our
RO membranes! if the surrounding water is to high in
salinity, they expel fresh water molecules through the skin & gills to nutralise the surrounding difference! huge amounts of bodily energy is used up, just like our body trying to stay walm when we are freezing> huge wastages of energy consumption! this balancing act can come at a price in extreme cases, the fishes systems can work overtime, leaving the door open to desease! but as in jarrasic park>>nature will always find a way! in our captive environments with constant bombardments she allows them to crash> hense negating any possible comeback from an imbalance! in nature this is called perpetual cataclism! <double check the spelling folks..lol