This letter shows the supplements in the paper authored by Saji et al. [published in Kagaku Kogaku Ronbunshu, 22, 1273-1280 (1996).] We correct here the momentum and CO2-conservation equations that were incorrect when they were transferred in the literature. In addition, we explain the reason of adoption of assumptions for physical quantities such as the Clathrate density, the CO2 solubility in seawater, and both the initial sizes of liquid-CO2 droplets and Clathrate balls released into the sea.