Desalination of seawater is an important process used to provide fresh water in regions where natural freshwater resources are limited. This process involves removing salts and other impurities from seawater to make it suitable for human consumption, agriculture, and industrial use. One of the most common methods is reverse osmosis, where water is forced through a semi-permeable membrane that separates salt and contaminants from clean water. Another method is thermal distillation, which involves heating seawater to produce vapor and then condensing it into fresh water. Although desalination requires a significant amount of energy and high operational costs, it has become an essential solution for water scarcity in many countries. Continuous improvements in technology are helping to reduce energy consumption and increase efficiency, making desalination more sustainable for the future.