why doesn't the ocean freeze? answer that question with some sort of evidence from the reading (i.e., Wingott&Laposata: pp. 28-30 and 418-423)

Ocean water freezes at a lower temperature than freshwater.Ocean water freezes just like freshwater, but at lower temperatures. Fresh water freezes at 32 degrees Fahrenheit but seawater freezes at about 28.4 degrees Fahrenheit , because of the salt in it.