If you look at ocean water in a clear glass, you’ll see that it’s not clear but full of tiny particles. Seawater contains dissolved salts, proteins, fats, dead algae, detergents and other pollutants. If you shake this glass of ocean water vigorously, small bubbles will form on the surface of the liquid.
Sea foam forms under similar conditions – but on a much grander scale – when storms roll in and the ocean is agitated by wind and waves. The creation of sea foam can occur often in gargantuan proportions.