The representation of these aerosols in climate models contributes significant uncertainty to our predictions of global warming or cooling. Sea spray aerosol (SSA) particles released into the atmosphere through bubble bursting at the ocean surface contain a wide range of biological and organic molecules, including proteins, saccharides, alkanes, and even whole or fragmented bacteria and viruses. The organic constituents of SSA are derived from marine microbial processes, which in turn influence the number concentrations of particles that can later form cloud droplets. While supermicron aerosol particles readily nucleate clouds due to their size, the cloud-forming potential of submicron SSA is controlled by the chemical complexity of the organic components and their morphologies. Fine SSA in particular, with diameters <200 nm, contain nearly 100% organic material by mass, yet observations indicate that these aerosols readily uptake water as if they were salt particles. It has been demonstrated for simple aerosol systems that morphology alone can directly influence hygroscopicity. Altaf et al. showed that homogenously mixed organic aerosols uptake water less readily than those of the same chemical compositions exhibiting complete phase separation. The discrepancy between the predicted and the observed water uptake of fine SSA is likely explained by morphology, but their small sizes and broad chemical complexity make them particularly challenging to study using single-particle analysis methods. Nevertheless, unraveling the relationship between chemical complexity and morphology will give us a better understanding of SSA climate impacts and enable better parametrizations of aerosol-cloud interactions in atmospheric models.