Sea foam, also known as ocean foam, beach foam, or spume, is a type of foam created by the agitation of seawater, particularly when it contains higher concentrations of dissolved organic matter. This organic matter includes proteins, fats, dead algae, detergents, and other pollutants. When seawater is shaken vigorously, small bubbles form on the surface of the liquid, and sea foam forms in a similar way but on a much grander scale when the ocean is agitated by wind and waves. Sea foam is a global phenomenon, and it varies depending on location and the potential influence of the surrounding marine, freshwater, and/or terrestrial environments. Foam can be blown by strong on-shore winds from the beach face inland due to its low density and persistence. Human activities, such as production, transport, or spillage of petroleum products or detergents, can also contribute to the formation of sea foam. Sea foam also acts as a mode of transport for both organisms and nutrients within the marine environment and, at times, into the intertidal or terrestrial environments. While most sea foam is not harmful to humans and is often an indication of a productive ocean ecosystem, large harmful algal blooms decay near the shore can hurt human health and the environment.