Algal biofuels are renewable energy sources made from algae, which are simple, photosynthetic organisms. These biofuels can be produced from various types of algae, including microalgae and macroalgae, and are considered a sustainable alternative to fossil fuels. Algae can grow rapidly and do not require arable land, making them an efficient option for biofuel production. The process of creating algal biofuels involves harvesting the algae, extracting oils, and converting them into fuels like biodiesel or bioethanol. This method not only helps reduce greenhouse gas emissions but also utilizes carbon dioxide, contributing to a more sustainable energy cycle.