The salinity of seawater is the amount of salt dissolved.in the water. On average, seawater contains 35 g of salt per liter. The more enclosed the sea, the higher its salinity. For example, salinity is lower than average in the North Pacific Ocean (32 g/l), but higher than average in the Red Sea (40 g/l). The Dead Sea is the saltiest body of water in the world, with a salinity of 330 g/l, and the Baltic Sea is one of the least salty, with a salinity of only 8 g/l. The balance between water evaporation from the oceans and precipitation is responsible for differences in salinity. Under subtropical anticyclones such as those in the Azores, evaporation is very high, and so the seawater is saltier. On the other hand, the equatorial region is subjected to strong and frequent rainfall, which results in a lower salinity level in seawater around the equator.