Halophiles are microorganisms that thrive in highly saline environments, such as salt lakes, salt flats, and salt mines. They have adapted to survive in conditions that would be inhospitable to most other life forms, often requiring salt concentrations that can be several times higher than that of seawater. These organisms belong to various groups, including archaea and some bacteria. Halophiles utilize unique biochemical processes to maintain their cellular functions in extreme salinity, often producing special proteins and enzymes that help them manage osmotic pressure. Their study can provide insights into the limits of life on Earth and potential life on other planets.