2. Saltpans – Creating Art with Coloured Salt Salt is an essential element in our lives. Measurements of sea surface salinity, or the concentration of salt at the ocean’s surface, provide scientists vital information about global ocean circulation. Together with temperature, salt directly affects seawater density (salty water is denser than freshwater) and the circulation of ocean currents from the tropics to the poles. These currents control how heat is carried within the oceans and ultimately regulate the world’s climate.
53 | 2 0 2 1 B l u e F l a g E n v i r o n m e n t a l E d u c a t i o n a l A c t i v i t i e s