Sea-salt nucleus

From Glossary of Meteorology

sea-salt nucleus

A condensation nucleus of a very hygroscopic nature produced by partial or complete desiccation of particles of sea spray or of seawater droplets derived from breaking bubbles.

That such nuclei are important in condensation processes over the oceans and near coasts is fairly well established, but it appears that they are not in general the source of nuclei in condensation over continental interiors.