Discuss how different our lives, economy and ecology might be if the coast of the Gulf of Maine froze the way the Antarctic coast does. Discuss how cold-blooded Antarctic animals such as invertebrates and fishes cope with the cold water. Place the different solutions of salt on a window sill and allow them to evaporate over a few days to show how much salt was in each container. Collect a cup of sea water from the Atlantic Ocean, and allow that to evaporate as a comparison. Commercial extraction of salt.
Many places extract salt from the sea.
Investigate how and where it is done on a commercial scale. Updated May 31, 2000. Gulf of Maine Aquarium. All rights reserved.