Extremophiles thrive under environmental conditions that would kill other creatures. Extremophiles are categorized as halophiles from hypersaline environments, acidophiles from acidic waters, psychrophiles from cold habitats, and thermophiles from warm waters. Extremophile Algae: From Biology to Biotechnology will focus on species of algae from ocean environments that thrive under extreme conditions of temperature, salinity, UV radiation, environmental pollutants and nutrients. The chapters will cover unique aspects of the biology of these extremophiles, with a focus on novel genetic and biochemical traits that lend these organisms to biotechnological applications.