The aerosol found in the lowest kilometer over the world's ocean is quite different than that found over land. It includes several unique components of marine origin in addition to a background component, which can be similar to that found over land. Large marine aerosol can have significant interaction with infrared propagation in this region and are thus very important for naval applications. This paper will discuss some of the author's research in this area with special emphasis on the aerosol of interest to the Navy. The topics will include the aerosol found from shipboard level to altitudes above the marine inversion, aerosol found in the boundary layers between the wave tops and shipboard level and the effect of surf produced in the coastal regions. This paper will also describe some aspects of recent series of experiments sponsored by the Office of Naval Research called EOPACE (Electro Optical Propagation in A Coastal Environment). This program has concentrated on looking at the history of the sea salt aerosol produced by the breaking of waves in a surf zone as it interacts with the micrometeorology in the ocean atmospheric surface layer.