<P> The temptation to drink seawater was greatest for sailors who had expended their supply of fresh water, and were unable to capture enough rainwater for drinking . This frustration was described famously by a line from Samuel Taylor Coleridge's The Rime of the Ancient Mariner: </P> <Dl> <Dd> <Dl> <Dd> <Dl> <Dd> "Water, water, everywhere, And all the boards did shrink; Water, water, everywhere, Nor any drop to drink ." </Dd> </Dl> </Dd> </Dl> </Dd> </Dl> <Dd> <Dl> <Dd> <Dl> <Dd> "Water, water, everywhere, And all the boards did shrink; Water, water, everywhere, Nor any drop to drink ." </Dd> </Dl> </Dd> </Dl> </Dd> <Dl> <Dd> <Dl> <Dd> "Water, water, everywhere, And all the boards did shrink; Water, water, everywhere, Nor any drop to drink ." </Dd> </Dl> </Dd> </Dl>

Compared to fresh water the freezing point of seawater is