• Question: Why can sea fish only live in salty water?

    Asked by chrisb on 23 Apr 2020.
    • Photo: Katherine Benson

      Katherine Benson answered on 23 Apr 2020:

      These fish have become highly adapted to living in the saltwater of the sea, which is their natural habitat. Their blood and cells have a really high salt concentration, if they’re put into freshwater, their blood and cells will begin to fill with water, they will get all bloated up, and die.