Microalgae are a valuable resource of carbon materials that may be used in biofuels, pharmaceuticals, cosmetics, and health supplements. There are, however, many challenges in the microalgae production process, such as mass cultivation, strain improvement, biomass disruption, and reprocessing of nutrients and water that have been encumbering the microalgal industry. Microalgal biotechnology has the capability to introduce remarkable breakthroughs and innovations. This volume highlights current advancements in the field of microalgal biotechnology.