Because the sea water contain salt the freezing point of this solution is lower.
the reason salt water freezes is because of the amount of salt in the water
If the salt is still in the water it will freeze inside the water so its technically frozen
I think it is fresh water freezes faster because the salt melts ice.
Tap water would freeze faster but salt water would allow the waters freezing point to be lowered.
Fresh water freezes at 32°f (0°c) at sea level. Sea water freezes at 28.4°f (-2°c) at sea level. Salt water depends on the concentration of salt. At maximum saturation salt water (23.3% by weight) freezes at -5.98°f (-21.1°c).
the salt prevents the water from getting cold
Salt Water
Salt water freezes at a lower temperature than fresh water, so it typically takes longer for salt water to freeze compared to fresh water. This is because the presence of salt lowers the freezing point of water.
Fresh water freezes faster than salt water because salt lowers the freezing point of water. When salt is dissolved in water, it disrupts the formation of ice crystals, requiring the salt water to become colder than fresh water in order to freeze. This phenomenon is known as the "freezing point depression."
Sugar water freezes faster than salt water. However, regular tap water will freeze faster than either salt, or sugar water.
Fresh water freezes at a higher temperature than salt water. This is because the presence of impurities in water lowers its freezing point.
Table salt melts/freezes at 802 degrees Celsius