Aerosol particle number concentration was measured over the ocean using a condensation particle counter. The data was collected during a research cruise in the Pacific Ocean. The measurements were taken at various depths and locations to understand the distribution of aerosol particles in the ocean. The data has been used to study the impact of aerosol particles on the ocean's chemistry and climate. The dataset is a valuable resource for researchers studying aerosol- ocean interactions. The data is available for download and can be used for further analysis. The authors would appreciate it if the data is used for any purpose and would be happy to provide additional information or answer any questions.