Salt water freezes at about -2°C, while fresh water freezes at 0°C. Species with the antifreeze proteins in their blood can survive in very cold ocean water.
To learn more about fish and the antifreeze proteins:
1. Go to the Freezing Fish WWW Sheet and print it.
2. Visit these Web sites. Then complete the WWW Sheet. Fish Antifreeze Proteins Antifreeze in Fish
Salt water freezes at about -2°C, while fresh water freezes at 0°C. Species with the antifreeze proteins in their blood can survive in very cold ocean water.