Florida is bordered by water on three sides. which property of water moderate florida’s coastal areas?

It is unclear what is meant by 'moderate Florida's coastal areas'. I assume the question relates to climate. The answer would then be that the water moderates the temperature of Florida. This is because water has a very high heat capacity and a lot of heat energy is required to result in a small change in temperature. So it is likely that the climate of Florida would experience much greater extremes if it was not surrounded by water.

Your weave is crusty